Try searching for...
SCFBio, IIT Delhi
Formula: C30H18O8 | Mol. Weight: 506.50 g/mol
IUPAC: 8,9b-bis(7-hydroxy-4-oxochromen-3-yl)-4,4a-dihydrodibenzofuran-3-one
C1C2C(C=CC1=O)(C3=C(O2)C=CC(=C3)C4=COC5=C(C4=O)C=CC(=C5)O)C6=COC7=C(C6=O)C=CC(=C7)O