Try searching for...
SCFBio, IIT Delhi
Formula: C21H22O12 | Mol. Weight: 466.40 g/mol
IUPAC: 2-[3,4-dihydroxy-5-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyphenyl]-5,7-dihydroxy-2,3-dihydrochromen-4-one
C1C(OC2=CC(=CC(=C2C1=O)O)O)C3=CC(=C(C(=C3)OC4C(C(C(C(O4)CO)O)O)O)O)O