Try searching for...
SCFBio, IIT Delhi
Formula: C21H20O10 | Mol. Weight: 432.40 g/mol
IUPAC: 5-hydroxy-2-(3-hydroxyphenyl)-7-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-one
C1=CC(=CC(=C1)O)C2=CC(=O)C3=C(C=C(C=C3O2)OC4C(C(C(C(O4)CO)O)O)O)O