Try searching for...
SCFBio, IIT Delhi
Formula: C21H18O9 | Mol. Weight: 414.40 g/mol
IUPAC: (2R,3R,4S)-2-(3,4-dihydroxyphenyl)-4-(2,4,6-trihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol
C1=CC(=C(C=C1C2C(C(C3=C(C=C(C=C3O2)O)O)C4=C(C=C(C=C4O)O)O)O)O)O