NP-MRD: Showing NP-Card for 9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate (NP0228553)

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Record Information

Version

2.0

Created at

2022-09-06 08:15:19 UTC

Updated at

2022-09-06 08:15:19 UTC

NP-MRD ID

NP0228553

Secondary Accession Numbers

None

Natural Product Identification

Common Name

9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate

Description

9A-hydroxy-3,4a,5-trimethyl-2-oxo-2H,4H,4aH,5H,6H,7H,8H,8aH,9H,9aH-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-3,4,4a,5,6,7,8,8a-octahydronaphthalen-2-yl)propanoate belongs to the class of organic compounds known as terpene lactones. These are prenol lipids containing a lactone ring. 9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate is found in Ligularia virgaurea. 9A-hydroxy-3,4a,5-trimethyl-2-oxo-2H,4H,4aH,5H,6H,7H,8H,8aH,9H,9aH-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-3,4,4a,5,6,7,8,8a-octahydronaphthalen-2-yl)propanoate is an extremely weak basic (essentially neutral) compound (based on its pKa).

Structure

MOL 3D MOL SDF PDB SMILES InChI


  Mrv1533004171519582D          

 36 40  0  0  0  0            999 V2000
    4.2868    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
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 35 36  2  0  0  0  0
M  END

     RDKit          3D

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M  END


  Mrv1533004171519582D          

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    7.1447    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.1447    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.8592   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.8592   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.1447   -1.6500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.4302   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.7158   -1.6500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.0013   -1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868   -1.6500    0.0000 O   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
  3  4  2  0  0  0  0
  3  5  1  0  0  0  0
  5  6  1  0  0  0  0
  6  7  1  0  0  0  0
  7  8  2  0  0  0  0
  8  9  1  0  0  0  0
  8 10  1  0  0  0  0
 10 11  2  0  0  0  0
 10 12  1  0  0  0  0
 12 13  1  0  0  0  0
  7 13  1  0  0  0  0
 13 14  1  0  0  0  0
 13 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
 18 19  1  0  0  0  0
 19 20  1  0  0  0  0
 20 21  1  0  0  0  0
 20 22  1  0  0  0  0
  6 22  1  0  0  0  0
 16 22  1  0  0  0  0
 22 23  1  0  0  0  0
  2 24  1  0  0  0  0
 24 25  2  0  0  0  0
 25 26  1  0  0  0  0
 26 27  1  0  0  0  0
 26 28  1  0  0  0  0
 28 29  1  0  0  0  0
 28 30  1  0  0  0  0
 30 31  1  0  0  0  0
 31 32  1  0  0  0  0
 32 33  1  0  0  0  0
 26 33  1  0  0  0  0
 33 34  1  0  0  0  0
 34 35  1  0  0  0  0
 24 35  1  0  0  0  0
 35 36  2  0  0  0  0
M  END
> <DATABASE_ID>
NP0228553

> <DATABASE_NAME>
NP-MRD

> <SMILES>
CC(C(=O)OC1C2=C(C)C(=O)OC2(O)CC2CCCC(C)C12C)C1=CC2(C)C(C)CCCC2CC1=O

> <INCHI_IDENTIFIER>
InChI=1S/C30H42O6/c1-16-9-7-11-20-13-23(31)22(15-28(16,20)5)18(3)26(32)35-25-24-19(4)27(33)36-30(24,34)14-21-12-8-10-17(2)29(21,25)6/h15-18,20-21,25,34H,7-14H2,1-6H3

> <INCHI_KEY>
DASNIXBCYXERSH-UHFFFAOYSA-N

> <FORMULA>
C30H42O6

> <MOLECULAR_WEIGHT>
498.66

> <EXACT_MASS>
498.298139072

> <JCHEM_ACCEPTOR_COUNT>
4

> <JCHEM_ATOM_COUNT>
78

> <JCHEM_AVERAGE_POLARIZABILITY>
54.819603927109036

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
1

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
0

> <JCHEM_IUPAC>
9a-hydroxy-3,4a,5-trimethyl-2-oxo-2H,4H,4aH,5H,6H,7H,8H,8aH,9H,9aH-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-3,4,4a,5,6,7,8,8a-octahydronaphthalen-2-yl)propanoate

> <ALOGPS_LOGP>
4.25

> <JCHEM_LOGP>
5.988562636333332

> <ALOGPS_LOGS>
-5.69

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
5

> <JCHEM_PHYSIOLOGICAL_CHARGE>
0

> <JCHEM_PKA_STRONGEST_ACIDIC>
11.185416349513025

> <JCHEM_PKA_STRONGEST_BASIC>
-4.467298888723001

> <JCHEM_POLAR_SURFACE_AREA>
89.9

> <JCHEM_REFRACTIVITY>
136.6552

> <JCHEM_ROTATABLE_BOND_COUNT>
4

> <JCHEM_RULE_OF_FIVE>
0

> <ALOGPS_SOLUBILITY>
1.01e-03 g/l

> <JCHEM_TRADITIONAL_IUPAC>
9a-hydroxy-3,4a,5-trimethyl-2-oxo-4H,5H,6H,7H,8H,8aH,9H-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate

> <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       8.002   1.540   0.000  0.00  0.00           C+0
HETATM    2  C   UNK     0       8.002   0.000   0.000  0.00  0.00           C+0
HETATM    3  C   UNK     0       6.668  -0.770   0.000  0.00  0.00           C+0
HETATM    4  O   UNK     0       6.668  -2.310   0.000  0.00  0.00           O+0
HETATM    5  O   UNK     0       5.335   0.000   0.000  0.00  0.00           O+0
HETATM    6  C   UNK     0       4.001  -0.770   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0       4.001  -2.310   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0       5.145  -3.340   0.000  0.00  0.00           C+0
HETATM    9  C   UNK     0       6.652  -3.020   0.000  0.00  0.00           C+0
HETATM   10  C   UNK     0       4.519  -4.747   0.000  0.00  0.00           C+0
HETATM   11  O   UNK     0       5.289  -6.081   0.000  0.00  0.00           O+0
HETATM   12  O   UNK     0       2.988  -4.586   0.000  0.00  0.00           O+0
HETATM   13  C   UNK     0       2.667  -3.080   0.000  0.00  0.00           C+0
HETATM   14  O   UNK     0       1.421  -3.985   0.000  0.00  0.00           O+0
HETATM   15  C   UNK     0       1.334  -2.310   0.000  0.00  0.00           C+0
HETATM   16  C   UNK     0       1.334  -0.770   0.000  0.00  0.00           C+0
HETATM   17  C   UNK     0       0.000   0.000   0.000  0.00  0.00           C+0
HETATM   18  C   UNK     0       0.000   1.540   0.000  0.00  0.00           C+0
HETATM   19  C   UNK     0       1.334   2.310   0.000  0.00  0.00           C+0
HETATM   20  C   UNK     0       2.667   1.540   0.000  0.00  0.00           C+0
HETATM   21  C   UNK     0       4.001   2.310   0.000  0.00  0.00           C+0
HETATM   22  C   UNK     0       2.667   0.000   0.000  0.00  0.00           C+0
HETATM   23  C   UNK     0       4.001   0.770   0.000  0.00  0.00           C+0
HETATM   24  C   UNK     0       9.336  -0.770   0.000  0.00  0.00           C+0
HETATM   25  C   UNK     0      10.669   0.000   0.000  0.00  0.00           C+0
HETATM   26  C   UNK     0      12.003  -0.770   0.000  0.00  0.00           C+0
HETATM   27  C   UNK     0      12.003   0.770   0.000  0.00  0.00           C+0
HETATM   28  C   UNK     0      13.337   0.000   0.000  0.00  0.00           C+0
HETATM   29  C   UNK     0      13.337   1.540   0.000  0.00  0.00           C+0
HETATM   30  C   UNK     0      14.670  -0.770   0.000  0.00  0.00           C+0
HETATM   31  C   UNK     0      14.670  -2.310   0.000  0.00  0.00           C+0
HETATM   32  C   UNK     0      13.337  -3.080   0.000  0.00  0.00           C+0
HETATM   33  C   UNK     0      12.003  -2.310   0.000  0.00  0.00           C+0
HETATM   34  C   UNK     0      10.669  -3.080   0.000  0.00  0.00           C+0
HETATM   35  C   UNK     0       9.336  -2.310   0.000  0.00  0.00           C+0
HETATM   36  O   UNK     0       8.002  -3.080   0.000  0.00  0.00           O+0
CONECT    1    2                                                            
CONECT    2    1    3   24                                                  
CONECT    3    2    4    5                                                  
CONECT    4    3                                                            
CONECT    5    3    6                                                       
CONECT    6    5    7   22                                                  
CONECT    7    6    8   13                                                  
CONECT    8    7    9   10                                                  
CONECT    9    8                                                            
CONECT   10    8   11   12                                                  
CONECT   11   10                                                            
CONECT   12   10   13                                                       
CONECT   13   12    7   14   15                                             
CONECT   14   13                                                            
CONECT   15   13   16                                                       
CONECT   16   15   17   22                                                  
CONECT   17   16   18                                                       
CONECT   18   17   19                                                       
CONECT   19   18   20                                                       
CONECT   20   19   21   22                                                  
CONECT   21   20                                                            
CONECT   22   20    6   16   23                                             
CONECT   23   22                                                            
CONECT   24    2   25   35                                                  
CONECT   25   24   26                                                       
CONECT   26   25   27   28   33                                             
CONECT   27   26                                                            
CONECT   28   26   29   30                                                  
CONECT   29   28                                                            
CONECT   30   28   31                                                       
CONECT   31   30   32                                                       
CONECT   32   31   33                                                       
CONECT   33   32   26   34                                                  
CONECT   34   33   35                                                       
CONECT   35   34   24   36                                                  
CONECT   36   35                                                            
MASTER        0    0    0    0    0    0    0    0   36    0   80    0
END

View in JSmol

Synonyms

Value	Source
9a-Hydroxy-3,4a,5-trimethyl-2-oxo-2H,4H,4ah,5H,6H,7H,8H,8ah,9H,9ah-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-3,4,4a,5,6,7,8,8a-octahydronaphthalen-2-yl)propanoic acid	Generator

Chemical Formula

C₃₀H₄₂O₆

Average Mass

498.6600 Da

Monoisotopic Mass

498.29814 Da

IUPAC Name

9a-hydroxy-3,4a,5-trimethyl-2-oxo-2H,4H,4aH,5H,6H,7H,8H,8aH,9H,9aH-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-3,4,4a,5,6,7,8,8a-octahydronaphthalen-2-yl)propanoate

Traditional Name

9a-hydroxy-3,4a,5-trimethyl-2-oxo-4H,5H,6H,7H,8H,8aH,9H-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate

CAS Registry Number

Not Available

SMILES

CC(C(=O)OC1C2=C(C)C(=O)OC2(O)CC2CCCC(C)C12C)C1=CC2(C)C(C)CCCC2CC1=O

InChI Identifier

InChI=1S/C30H42O6/c1-16-9-7-11-20-13-23(31)22(15-28(16,20)5)18(3)26(32)35-25-24-19(4)27(33)36-30(24,34)14-21-12-8-10-17(2)29(21,25)6/h15-18,20-21,25,34H,7-14H2,1-6H3

InChI Key

DASNIXBCYXERSH-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
Ligularia virgaurea	LOTUS Database	35616633

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as terpene lactones. These are prenol lipids containing a lactone ring.

Kingdom

Organic compounds

Super Class

Lipids and lipid-like molecules

Class

Prenol lipids

Sub Class

Terpene lactones

Direct Parent

Terpene lactones

Alternative Parents

Substituents

Terpene lactone
Eremophilanolide or secoeremophilanolide
Sesquiterpenoid
Eremophilane sesquiterpenoid
Naphthofuran
Cyclohexenone
2-furanone
Dicarboxylic acid or derivatives
Enoate ester
Alpha,beta-unsaturated carboxylic ester
Cyclic alcohol
Dihydrofuran
Cyclic ketone
Carboxylic acid ester
Hemiacetal
Ketone
Lactone
Oxacycle
Carboxylic acid derivative
Organoheterocyclic compound
Organic oxygen compound
Hydrocarbon derivative
Carbonyl group
Organic oxide
Organooxygen compound
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	4.25	ALOGPS
logP	5.99	ChemAxon
logS	-5.7	ALOGPS
pKa (Strongest Acidic)	11.19	ChemAxon
pKa (Strongest Basic)	-4.5	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	4	ChemAxon
Hydrogen Donor Count	1	ChemAxon
Polar Surface Area	89.9 Å²	ChemAxon
Rotatable Bond Count	4	ChemAxon
Refractivity	136.66 m³·mol⁻¹	ChemAxon
Polarizability	54.82 Å³	ChemAxon
Number of Rings	5	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	No	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	No	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

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

Not Available

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

LOTUS database [Link]

Showing NP-Card for 9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate (NP0228553)

MOL for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)

3D MOL for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)

3D SDF for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)

3D-SDF for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)

PDB for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)

3D PDB for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)

SMILES for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)

INCHI for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)

Structure for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)

3D Structure for NP0228553 (9a-hydroxy-3,4a,5-trimethyl-2-oxo-4h,5h,6h,7h,8h,8ah,9h-naphtho[2,3-b]furan-4-yl 2-(8,8a-dimethyl-3-oxo-4,4a,5,6,7,8-hexahydronaphthalen-2-yl)propanoate)