Try searching for...
SCFBio, IIT Delhi
Formula: C18H18O2 | Mol. Weight: 266.30 g/mol
IUPAC: 5-ethenyl-1,7-dimethyl-9,10-dihydrophenanthrene-2,3-diol
CC1=CC2=C(C(=C1)C=C)C3=CC(=C(C(=C3CC2)C)O)O