Try searching for...
SCFBio, IIT Delhi
Formula: C31H24O6 | Mol. Weight: 492.50 g/mol
IUPAC: 1-(2-hydroxy-4,7-dimethoxyphenanthren-1-yl)-4-methoxyphenanthrene-2,7-diol
COC1=CC2=C(C=C1)C3=C(C=C(C(=C3C=C2)C4=C5C=CC6=C(C5=C(C=C4O)OC)C=CC(=C6)O)O)OC