NP-MRD: Showing NP-Card for (12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene (NP0216656)

Jump To Section:

Identification Spectra BioTaxonomy ChemoTaxonomy Physical properties Links References XML

Record Information

Version

2.0

Created at

2022-09-05 16:42:22 UTC

Updated at

2022-09-05 16:42:22 UTC

NP-MRD ID

NP0216656

Secondary Accession Numbers

None

Natural Product Identification

Common Name

(12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene

Description

(+)-1,2-Methylenedioxy-5,6,6aalpha,7-tetrahydro-4H-dibenzo[de,g]quinoline belongs to the class of organic compounds known as aporphines. These are quinoline alkaloids containing the dibenzo[de,g]quinoline ring system or a dehydrogenated derivative thereof. (12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene is found in Annickia polycarpa, Magnolia obovata, Nelumbo lutea and Nelumbo nucifera. Based on a literature review very few articles have been published on (+)-1,2-Methylenedioxy-5,6,6aalpha,7-tetrahydro-4H-dibenzo[de,g]quinoline.

Structure

MOL 3D MOL SDF PDB SMILES InChI

     RDKit          3D

 35 39  0  0  0  0  0  0  0  0999 V2000
   -3.4949   -2.3628   -0.1343 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.8139   -1.0617    0.1462 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.7838   -0.1201    0.1983 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4866   -0.5203   -0.0313 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.1718   -1.8306   -0.3124 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.2113   -2.7768   -0.3646 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.1883   -2.2863   -0.5427 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.2684   -1.2832   -0.5876 C   0  0  2  0  0  0  0  0  0  0  0  0
    2.3941   -1.7409    0.2129 N   0  0  0  0  0  0  0  0  0  0  0  0
    3.3980   -0.7648    0.4567 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.2596    0.4153   -0.4798 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.9216    1.0006   -0.1942 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.6827    2.3068    0.0981 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.3903    2.7173    0.3488 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.6740    1.8075    0.3062 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.4198    0.4859    0.0090 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.8669    0.0865   -0.2395 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.7844    2.5711    0.6038 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5096    3.9338    0.5564 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.0992    3.9883    0.6664 O   0  0  0  0  0  0  0  0  0  0  0  0
   -4.2780   -3.1078   -0.1796 H   0  0  0  0  0  0  0  0  0  0  0  0
   -4.8238   -0.7732    0.3207 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0312    0.8910    0.4156 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.9369   -3.7842   -0.5851 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.1731   -2.9209   -1.4800 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.4231   -3.0398    0.2737 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.7126   -1.1894   -1.6351 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.0853   -2.1495    1.1279 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.3332   -0.3344    1.4988 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.4007   -1.2016    0.2770 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.0722    1.1554   -0.3080 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.2991    0.0672   -1.5268 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.5267    3.0091    0.1284 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.0232    4.4518    1.3845 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.8534    4.3606   -0.4287 H   0  0  0  0  0  0  0  0  0  0  0  0
 19 20  1  0
 20 14  1  0
 14 15  2  0
 15 18  1  0
 15 16  1  0
 16 17  2  0
 17  8  1  0
  8  7  1  0
  7  5  1  0
  5  6  2  0
  6  1  1  0
  1  2  2  0
  2  3  1  0
  3  4  2  0
  8  9  1  0
  9 10  1  0
 10 11  1  0
 11 12  1  0
 12 13  2  0
 18 19  1  0
  4 16  1  0
 13 14  1  0
 12 17  1  0
  4  5  1  0
 19 34  1  0
 19 35  1  0
  8 27  1  6
  7 25  1  0
  7 26  1  0
  6 24  1  0
  1 21  1  0
  2 22  1  0
  3 23  1  0
  9 28  1  0
 10 29  1  0
 10 30  1  0
 11 31  1  0
 11 32  1  0
 13 33  1  0
M  END


  Mrv1652309052218422D          

 20 24  0  0  1  0            999 V2000
    5.0013   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.0013   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868   -1.6500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579   -1.6500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434   -1.2375    0.0000 C   0  0  2  0  0  0  0  0  0  0  0  0
    1.4289   -1.6500    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.7145   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4289   -0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4289    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8579    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1434   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.4710    1.3770    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.1354    2.1307    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.3149    2.0445    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0  0  0  0
  2  3  1  0  0  0  0
  3  4  2  0  0  0  0
  4  5  1  0  0  0  0
  5  6  2  0  0  0  0
  1  6  1  0  0  0  0
  5  7  1  0  0  0  0
  7  8  1  0  0  0  0
  8  9  1  6  0  0  0
  9 10  1  0  0  0  0
 10 11  1  0  0  0  0
 11 12  1  0  0  0  0
 12 13  2  0  0  0  0
 13 14  1  0  0  0  0
 14 15  2  0  0  0  0
 15 16  1  0  0  0  0
  4 16  1  0  0  0  0
 16 17  2  0  0  0  0
 12 17  1  0  0  0  0
  8 17  1  0  0  0  0
 15 18  1  0  0  0  0
 18 19  1  0  0  0  0
 19 20  1  0  0  0  0
 14 20  1  0  0  0  0
M  END
> <DATABASE_ID>
NP0216656

> <DATABASE_NAME>
NP-MRD

> <SMILES>
C1OC2=C(O1)C1=C3[C@H](CC4=CC=CC=C14)NCCC3=C2

> <INCHI_IDENTIFIER>
InChI=1S/C17H15NO2/c1-2-4-12-10(3-1)7-13-15-11(5-6-18-13)8-14-17(16(12)15)20-9-19-14/h1-4,8,13,18H,5-7,9H2/t13-/m0/s1

> <INCHI_KEY>
VZTUKBKUWSHDFM-ZDUSSCGKSA-N

> <FORMULA>
C17H15NO2

> <MOLECULAR_WEIGHT>
265.312

> <EXACT_MASS>
265.110278727

> <JCHEM_ACCEPTOR_COUNT>
3

> <JCHEM_ATOM_COUNT>
35

> <JCHEM_AVERAGE_POLARIZABILITY>
29.20803841128394

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
1

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
1

> <JCHEM_IUPAC>
(12S)-3,5-dioxa-11-azapentacyclo[10.7.1.0^{2,6}.0^{8,20}.0^{14,19}]icosa-1(20),2(6),7,14,16,18-hexaene

> <JCHEM_LOGP>
2.9415975579999993

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
5

> <JCHEM_PHYSIOLOGICAL_CHARGE>
1

> <JCHEM_PKA_STRONGEST_BASIC>
9.200898587381602

> <JCHEM_POLAR_SURFACE_AREA>
30.49

> <JCHEM_REFRACTIVITY>
76.4985

> <JCHEM_ROTATABLE_BOND_COUNT>
0

> <JCHEM_RULE_OF_FIVE>
1

> <JCHEM_TRADITIONAL_IUPAC>
(12S)-3,5-dioxa-11-azapentacyclo[10.7.1.0^{2,6}.0^{8,20}.0^{14,19}]icosa-1(20),2(6),7,14,16,18-hexaene

> <JCHEM_VEBER_RULE>
1

$$$$

HEADER    PROTEIN                                 05-SEP-22   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   05-SEP-22         0                                  
HETATM    1  C   UNK     0       9.336  -2.310   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0       9.336  -0.770   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0       8.002   0.000   0.000  0.00  0.00           C+0
HETATM    4  C   UNK     0       6.668  -0.770   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0       6.668  -2.310   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0       8.002  -3.080   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0       5.335  -3.080   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0       4.001  -2.310   0.000  0.00  0.00           C+0
HETATM    9  N   UNK     0       2.667  -3.080   0.000  0.00  0.00           N+0
HETATM   10  C   UNK     0       1.334  -2.310   0.000  0.00  0.00           C+0
HETATM   11  C   UNK     0       1.334  -0.770   0.000  0.00  0.00           C+0
HETATM   12  C   UNK     0       2.667  -0.000   0.000  0.00  0.00           C+0
HETATM   13  C   UNK     0       2.667   1.540   0.000  0.00  0.00           C+0
HETATM   14  C   UNK     0       4.001   2.310   0.000  0.00  0.00           C+0
HETATM   15  C   UNK     0       5.335   1.540   0.000  0.00  0.00           C+0
HETATM   16  C   UNK     0       5.335   0.000   0.000  0.00  0.00           C+0
HETATM   17  C   UNK     0       4.001  -0.770   0.000  0.00  0.00           C+0
HETATM   18  O   UNK     0       6.479   2.570   0.000  0.00  0.00           O+0
HETATM   19  C   UNK     0       5.853   3.977   0.000  0.00  0.00           C+0
HETATM   20  O   UNK     0       4.321   3.816   0.000  0.00  0.00           O+0
CONECT    1    2    6                                                       
CONECT    2    1    3                                                       
CONECT    3    2    4                                                       
CONECT    4    3    5   16                                                  
CONECT    5    4    6    7                                                  
CONECT    6    5    1                                                       
CONECT    7    5    8                                                       
CONECT    8    7    9   17                                                  
CONECT    9    8   10                                                       
CONECT   10    9   11                                                       
CONECT   11   10   12                                                       
CONECT   12   11   13   17                                                  
CONECT   13   12   14                                                       
CONECT   14   13   15   20                                                  
CONECT   15   14   16   18                                                  
CONECT   16   15    4   17                                                  
CONECT   17   16   12    8                                                  
CONECT   18   15   19                                                       
CONECT   19   18   20                                                       
CONECT   20   19   14                                                       
MASTER        0    0    0    0    0    0    0    0   20    0   48    0
END

View in JSmol

Synonyms

Not Available

Chemical Formula

C₁₇H₁₅NO₂

Average Mass

265.3120 Da

Monoisotopic Mass

265.11028 Da

IUPAC Name

(12S)-3,5-dioxa-11-azapentacyclo[10.7.1.0^{2,6}.0^{8,20}.0^{14,19}]icosa-1(20),2(6),7,14,16,18-hexaene

Traditional Name

(12S)-3,5-dioxa-11-azapentacyclo[10.7.1.0^{2,6}.0^{8,20}.0^{14,19}]icosa-1(20),2(6),7,14,16,18-hexaene

CAS Registry Number

Not Available

SMILES

C1OC2=C(O1)C1=C3[C@H](CC4=CC=CC=C14)NCCC3=C2

InChI Identifier

InChI=1S/C17H15NO2/c1-2-4-12-10(3-1)7-13-15-11(5-6-18-13)8-14-17(16(12)15)20-9-19-14/h1-4,8,13,18H,5-7,9H2/t13-/m0/s1

InChI Key

VZTUKBKUWSHDFM-ZDUSSCGKSA-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
Annickia polycarpa	LOTUS Database	35616633
Magnolia obovata	LOTUS Database	35616633
Nelumbo lutea	LOTUS Database	35616633
Nelumbo nucifera	LOTUS Database	35616633

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as aporphines. These are quinoline alkaloids containing the dibenzo[de,g]quinoline ring system or a dehydrogenated derivative thereof.

Kingdom

Organic compounds

Super Class

Alkaloids and derivatives

Class

Aporphines

Sub Class

Not Available

Direct Parent

Aporphines

Alternative Parents

Substituents

Aporphine
Benzoquinoline
Phenanthrene
Naphthalene
Quinoline
Tetrahydroisoquinoline
Benzodioxole
Aralkylamine
Benzenoid
Oxacycle
Azacycle
Organoheterocyclic compound
Secondary aliphatic amine
Acetal
Secondary amine
Hydrocarbon derivative
Organonitrogen compound
Organooxygen compound
Organopnictogen compound
Amine
Organic oxygen compound
Organic nitrogen compound
Aromatic heteropolycyclic compound

Molecular Framework

Aromatic 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	2.94	ChemAxon
pKa (Strongest Basic)	9.2	ChemAxon
Physiological Charge	1	ChemAxon
Hydrogen Acceptor Count	3	ChemAxon
Hydrogen Donor Count	1	ChemAxon
Polar Surface Area	30.49 Å²	ChemAxon
Rotatable Bond Count	0	ChemAxon
Refractivity	76.5 m³·mol⁻¹	ChemAxon
Polarizability	29.21 Å³	ChemAxon
Number of Rings	5	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	Yes	ChemAxon
Veber's Rule	Yes	ChemAxon
MDDR-like Rule	No	ChemAxon

External Links

HMDB ID

Not Available

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FoodDB ID

Not Available

KNApSAcK ID

C00052471

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

26202781

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

LOTUS database [Link]

Showing NP-Card for (12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene (NP0216656)

MOL for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)

3D MOL for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)

3D SDF for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)

3D-SDF for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)

PDB for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)

3D PDB for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)

SMILES for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)

INCHI for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)

Structure for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)

3D Structure for NP0216656 ((12s)-3,5-dioxa-11-azapentacyclo[10.7.1.0²,⁶.0⁸,²⁰.0¹⁴,¹⁹]icosa-1(20),2(6),7,14,16,18-hexaene)