Try searching for...
SCFBio, IIT Delhi
Formula: C16H16O4 | Mol. Weight: 272.29 g/mol
IUPAC: 5,7-dimethoxy-9,10-dihydrophenanthrene-3,4-diol
COC1=CC2=C(C(=C1)OC)C3=C(CC2)C=CC(=C3O)O