Try searching for...
SCFBio, IIT Delhi
Formula: C21H18O12 | Mol. Weight: 462.40 g/mol
IUPAC: (2S,3S,4S,5R,6S)-6-[5-(5,7-dihydroxy-4-oxochromen-2-yl)-2-hydroxyphenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid
C1=CC(=C(C=C1C2=CC(=O)C3=C(C=C(C=C3O2)O)O)OC4C(C(C(C(O4)C(=O)O)O)O)O)O