Try searching for...
SCFBio, IIT Delhi
Formula: C19H20O6 | Mol. Weight: 344.40 g/mol
IUPAC: 2,4,6,7,8-pentamethoxyphenanthren-3-ol
COC1=C(C(=C2C(=C1)C=CC3=C(C(=C(C=C32)OC)OC)OC)OC)O