Try searching for...
SCFBio, IIT Delhi
Formula: C20H18O9 | Mol. Weight: 402.40 g/mol
IUPAC: 5,7-dihydroxy-2-(4-hydroxyphenyl)-6-(3,4,5-trihydroxyoxan-2-yl)chromen-4-one
C1C(C(C(C(O1)C2=C(C3=C(C=C2O)OC(=CC3=O)C4=CC=C(C=C4)O)O)O)O)O