NP-MRD: Showing NP-Card for 5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate (NP0177012)

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Record Information

Version

2.0

Created at

2022-09-03 14:46:32 UTC

Updated at

2022-09-03 14:46:33 UTC

NP-MRD ID

NP0177012

Secondary Accession Numbers

None

Natural Product Identification

Common Name

5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate

Description

5-(Acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]Octadec-11-en-10-yl acetate belongs to the class of organic compounds known as ergostane steroids. These are steroids with a structure based on the ergostane skeleton, which arises from the methylation of cholestane at the 24-position. 5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate is found in Spongia officinalis. 5-(Acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]Octadec-11-en-10-yl acetate is an extremely weak basic (essentially neutral) compound (based on its pKa).

Structure

MOL 3D MOL SDF PDB SMILES InChI


  Mrv1533004171521492D          

 37 41  0  0  0  0            999 V2000
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  1  2  1  0  0  0  0
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 35 37  1  0  0  0  0
M  END

     RDKit          3D

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M  END


  Mrv1533004171521492D          

 37 41  0  0  0  0            999 V2000
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    1.0924    0.7289    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.2803    0.8741    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.5318    1.0193    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.8121    1.7952    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.2803    2.4259    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.5318    2.2807    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.2515    3.0566    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.0636    2.9114    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.8758    2.7662    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.4076    3.3969    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.1273    4.1728    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.3152    4.3180    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.6591    4.8035    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.6242    1.9404    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.9045    2.7164    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.7167    2.8616    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.3727    3.3471    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  2  3  1  0  0  0  0
  2  4  1  0  0  0  0
  4  5  1  0  0  0  0
  6  4  1  4  0  0  0
  6  7  2  0  0  0  0
  7  8  1  0  0  0  0
  8  9  1  0  0  0  0
  8 10  1  0  0  0  0
 10 11  1  0  0  0  0
 11 12  1  0  0  0  0
 12 13  1  0  0  0  0
 13 14  2  0  0  0  0
 14 15  1  0  0  0  0
 15 16  1  0  0  0  0
 16 17  1  0  0  0  0
 17 18  1  0  0  0  0
 10 18  1  0  0  0  0
 13 18  1  0  0  0  0
 18 19  1  0  0  0  0
 15 20  1  0  0  0  0
 20 21  1  0  0  0  0
 20 22  1  0  0  0  0
 22 23  1  0  0  0  0
 23 24  1  0  0  0  0
 24 25  1  0  0  0  0
 25 26  1  0  0  0  0
 20 26  1  0  0  0  0
 26 27  1  0  0  0  0
 27 28  1  0  0  0  0
 26 28  1  0  0  0  0
 28 29  1  0  0  0  0
 14 29  1  0  0  0  0
 29 30  1  0  0  0  0
 30 31  1  0  0  0  0
 31 32  2  0  0  0  0
 31 33  1  0  0  0  0
 24 34  1  0  0  0  0
 34 35  1  0  0  0  0
 35 36  2  0  0  0  0
 35 37  1  0  0  0  0
M  END
> <DATABASE_ID>
NP0177012

> <DATABASE_NAME>
NP-MRD

> <SMILES>
CC(C)C(C)C=CC(C)C1CCC2=C3C(OC(C)=O)C4OC44CC(CCC4(C)C3CCC12C)OC(C)=O

> <INCHI_IDENTIFIER>
InChI=1S/C32H48O5/c1-18(2)19(3)9-10-20(4)24-11-12-25-27-26(14-15-30(24,25)7)31(8)16-13-23(35-21(5)33)17-32(31)29(37-32)28(27)36-22(6)34/h9-10,18-20,23-24,26,28-29H,11-17H2,1-8H3

> <INCHI_KEY>
QUDURYJNEXSODI-UHFFFAOYSA-N

> <FORMULA>
C32H48O5

> <MOLECULAR_WEIGHT>
512.731

> <EXACT_MASS>
512.350174646

> <JCHEM_ACCEPTOR_COUNT>
3

> <JCHEM_ATOM_COUNT>
85

> <JCHEM_AVERAGE_POLARIZABILITY>
60.67110688258905

> <JCHEM_BIOAVAILABILITY>
0

> <JCHEM_DONOR_COUNT>
0

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
0

> <JCHEM_IUPAC>
5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate

> <ALOGPS_LOGP>
6.27

> <JCHEM_LOGP>
5.8122895136666655

> <ALOGPS_LOGS>
-6.25

> <JCHEM_MDDR_LIKE_RULE>
1

> <JCHEM_NUMBER_OF_RINGS>
5

> <JCHEM_PHYSIOLOGICAL_CHARGE>
0

> <JCHEM_PKA_STRONGEST_BASIC>
-4.251454219900632

> <JCHEM_POLAR_SURFACE_AREA>
65.13

> <JCHEM_REFRACTIVITY>
144.86149999999998

> <JCHEM_ROTATABLE_BOND_COUNT>
8

> <JCHEM_RULE_OF_FIVE>
0

> <ALOGPS_SOLUBILITY>
2.86e-04 g/l

> <JCHEM_TRADITIONAL_IUPAC>
5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate

> <JCHEM_VEBER_RULE>
0

$$$$

HEADER    PROTEIN                                 17-APR-15   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   17-APR-15         0                                  
HETATM    1  C   UNK     0      15.015  -0.970   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0      13.490  -1.180   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0      12.909  -2.607   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0      12.544   0.035   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0      13.125   1.462   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0      11.019  -0.175   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0      10.074   1.041   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0       8.548   0.830   0.000  0.00  0.00           C+0
HETATM    9  C   UNK     0       7.968  -0.597   0.000  0.00  0.00           C+0
HETATM   10  C   UNK     0       7.603   2.046   0.000  0.00  0.00           C+0
HETATM   11  C   UNK     0       8.031   3.525   0.000  0.00  0.00           C+0
HETATM   12  C   UNK     0       6.756   4.389   0.000  0.00  0.00           C+0
HETATM   13  C   UNK     0       5.541   3.444   0.000  0.00  0.00           C+0
HETATM   14  C   UNK     0       4.025   3.715   0.000  0.00  0.00           C+0
HETATM   15  C   UNK     0       3.032   2.538   0.000  0.00  0.00           C+0
HETATM   16  C   UNK     0       3.555   1.089   0.000  0.00  0.00           C+0
HETATM   17  C   UNK     0       5.071   0.818   0.000  0.00  0.00           C+0
HETATM   18  C   UNK     0       6.064   1.996   0.000  0.00  0.00           C+0
HETATM   19  C   UNK     0       6.736   0.610   0.000  0.00  0.00           C+0
HETATM   20  C   UNK     0       1.516   2.809   0.000  0.00  0.00           C+0
HETATM   21  C   UNK     0       2.039   1.361   0.000  0.00  0.00           C+0
HETATM   22  C   UNK     0       0.523   1.632   0.000  0.00  0.00           C+0
HETATM   23  C   UNK     0      -0.993   1.903   0.000  0.00  0.00           C+0
HETATM   24  C   UNK     0      -1.516   3.351   0.000  0.00  0.00           C+0
HETATM   25  C   UNK     0      -0.523   4.528   0.000  0.00  0.00           C+0
HETATM   26  C   UNK     0       0.993   4.257   0.000  0.00  0.00           C+0
HETATM   27  O   UNK     0       0.470   5.706   0.000  0.00  0.00           O+0
HETATM   28  C   UNK     0       1.985   5.435   0.000  0.00  0.00           C+0
HETATM   29  C   UNK     0       3.501   5.164   0.000  0.00  0.00           C+0
HETATM   30  O   UNK     0       4.494   6.341   0.000  0.00  0.00           O+0
HETATM   31  C   UNK     0       3.971   7.789   0.000  0.00  0.00           C+0
HETATM   32  O   UNK     0       2.455   8.060   0.000  0.00  0.00           O+0
HETATM   33  C   UNK     0       4.964   8.967   0.000  0.00  0.00           C+0
HETATM   34  O   UNK     0      -3.032   3.622   0.000  0.00  0.00           O+0
HETATM   35  C   UNK     0      -3.555   5.071   0.000  0.00  0.00           C+0
HETATM   36  O   UNK     0      -5.071   5.342   0.000  0.00  0.00           O+0
HETATM   37  C   UNK     0      -2.562   6.248   0.000  0.00  0.00           C+0
CONECT    1    2                                                            
CONECT    2    1    3    4                                                  
CONECT    3    2                                                            
CONECT    4    2    5    6                                                  
CONECT    5    4                                                            
CONECT    6    4    7                                                       
CONECT    7    6    8                                                       
CONECT    8    7    9   10                                                  
CONECT    9    8                                                            
CONECT   10    8   11   18                                                  
CONECT   11   10   12                                                       
CONECT   12   11   13                                                       
CONECT   13   12   14   18                                                  
CONECT   14   13   15   29                                                  
CONECT   15   14   16   20                                                  
CONECT   16   15   17                                                       
CONECT   17   16   18                                                       
CONECT   18   17   10   13   19                                             
CONECT   19   18                                                            
CONECT   20   15   21   22   26                                             
CONECT   21   20                                                            
CONECT   22   20   23                                                       
CONECT   23   22   24                                                       
CONECT   24   23   25   34                                                  
CONECT   25   24   26                                                       
CONECT   26   25   20   27   28                                             
CONECT   27   26   28                                                       
CONECT   28   27   26   29                                                  
CONECT   29   28   14   30                                                  
CONECT   30   29   31                                                       
CONECT   31   30   32   33                                                  
CONECT   32   31                                                            
CONECT   33   31                                                            
CONECT   34   24   35                                                       
CONECT   35   34   36   37                                                  
CONECT   36   35                                                            
CONECT   37   35                                                            
MASTER        0    0    0    0    0    0    0    0   37    0   82    0
END

View in JSmol

Synonyms

Value	Source
5-(Acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0,.0,.0,]octadec-11-en-10-yl acetic acid	Generator
5-(Acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetic acid	Generator

Chemical Formula

C₃₂H₄₈O₅

Average Mass

512.7310 Da

Monoisotopic Mass

512.35017 Da

IUPAC Name

5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate

Traditional Name

5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate

CAS Registry Number

Not Available

SMILES

CC(C)C(C)C=CC(C)C1CCC2=C3C(OC(C)=O)C4OC44CC(CCC4(C)C3CCC12C)OC(C)=O

InChI Identifier

InChI=1S/C32H48O5/c1-18(2)19(3)9-10-20(4)24-11-12-25-27-26(14-15-30(24,25)7)31(8)16-13-23(35-21(5)33)17-32(31)29(37-32)28(27)36-22(6)34/h9-10,18-20,23-24,26,28-29H,11-17H2,1-8H3

InChI Key

QUDURYJNEXSODI-UHFFFAOYSA-N

Experimental Spectra

Not Available

Predicted Spectra

Spectrum Type	Description	Depositor ID	Depositor Organization	Depositor	Deposition Date	View
1D NMR	¹³C NMR Spectrum (1D, 25 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 100 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 252 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 1000 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 50 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 200 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 75 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 300 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 101 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 400 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 126 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 500 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 151 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 600 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 176 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 700 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 201 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 800 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 226 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 900 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum

Chemical Shift Submissions

Not Available

Species

Species of Origin

Species Name	Source	Reference
Spongia officinalis	LOTUS Database	35616633

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as ergostane steroids. These are steroids with a structure based on the ergostane skeleton, which arises from the methylation of cholestane at the 24-position.

Kingdom

Organic compounds

Super Class

Lipids and lipid-like molecules

Class

Steroids and steroid derivatives

Sub Class

Ergostane steroids

Direct Parent

Ergostane steroids

Alternative Parents

Substituents

Ergostane-skeleton
Steroid ester
5,6-epoxysteroid
Oxepane
Dicarboxylic acid or derivatives
Carboxylic acid ester
Carboxylic acid derivative
Dialkyl ether
Oxirane
Ether
Oxacycle
Organoheterocyclic compound
Organic oxygen compound
Organooxygen compound
Hydrocarbon derivative
Carbonyl group
Organic oxide
Aliphatic heteropolycyclic compound

Molecular Framework

Aliphatic heteropolycyclic compounds

External Descriptors

Not Available

Physical Properties

State

Not Available

Experimental Properties

Property	Value	Reference
Melting Point	Not Available	Not Available
Boiling Point	Not Available	Not Available
Water Solubility	Not Available	Not Available
LogP	Not Available	Not Available

Predicted Properties

Property	Value	Source
logP	6.27	ALOGPS
logP	5.81	ChemAxon
logS	-6.2	ALOGPS
pKa (Strongest Basic)	-4.3	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	3	ChemAxon
Hydrogen Donor Count	0	ChemAxon
Polar Surface Area	65.13 Å²	ChemAxon
Rotatable Bond Count	8	ChemAxon
Refractivity	144.86 m³·mol⁻¹	ChemAxon
Polarizability	60.67 Å³	ChemAxon
Number of Rings	5	ChemAxon
Bioavailability	No	ChemAxon
Rule of Five	No	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	No	ChemAxon
MDDR-like Rule	Yes	ChemAxon

External Links

HMDB ID

Not Available

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FoodDB ID

Not Available

KNApSAcK ID

Not Available

Chemspider ID

Not Available

KEGG Compound ID

Not Available

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

74000095

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

LOTUS database [Link]

Showing NP-Card for 5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate (NP0177012)

MOL for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)

3D MOL for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)

3D SDF for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)

3D-SDF for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)

PDB for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)

3D PDB for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)

SMILES for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)

INCHI for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)

Structure for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)

3D Structure for NP0177012 (5-(acetyloxy)-15-(5,6-dimethylhept-3-en-2-yl)-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-11-en-10-yl acetate)