Try searching for...
SCFBio, IIT Delhi
Formula: C20H18O4 | Mol. Weight: 322.40 g/mol
IUPAC: (4aS)-4a-hydroxy-7-methoxy-1,4-dimethyl-2,3-dihydrocyclopenta[b]anthracene-5,10-dione
CC1=C2C=C3C(=O)C4=C(C=C(C=C4)OC)C(=O)C3(C(=C2CC1)C)O