Try searching for...
SCFBio, IIT Delhi
Formula: C22H30O7 | Mol. Weight: 406.50 g/mol
IUPAC: 2-[(4bS,8aS,9S,10S)-1,9,10-trihydroxy-4b,8,8-trimethyl-3,4-dioxo-5,6,7,8a,9,10-hexahydrophenanthren-2-yl]propyl acetate
CC(COC(=O)C)C1=C(C2=C(C(=O)C1=O)C3(CCCC(C3C(C2O)O)(C)C)C)O