Try searching for...
SCFBio, IIT Delhi
Formula: C32H26O8 | Mol. Weight: 538.50 g/mol
IUPAC: 1-(2,7-dihydroxy-4,8-dimethoxyphenanthren-1-yl)-4,8-dimethoxyphenanthrene-2,7-diol
COC1=C2C3=C(C=CC2=C(C(=C1)O)C4=C5C=CC6=C(C5=C(C=C4O)OC)C=CC(=C6OC)O)C(=C(C=C3)O)OC