Try searching for...
SCFBio, IIT Delhi
Formula: C21H18O6 | Mol. Weight: 366.40 g/mol
IUPAC: 9-(3,4-dimethoxyphenyl)-7-hydroxy-6-methoxy-1H-benzo[f][2]benzofuran-3-one
COC1=C(C=C(C=C1)C2=C3C=C(C(=CC3=CC4=C2COC4=O)OC)O)OC