Formula: C21H18O15S | Mol. Weight: 542.40 g/mol
IUPAC: (2S,3S,4S,5R,6S)-3,4,5-trihydroxy-6-[5-hydroxy-2-(4-hydroxyphenyl)-4-oxo-7-sulfooxychromen-3-yl]oxyoxane-2-carboxylic acid
C1=CC(=CC=C1C2=C(C(=O)C3=C(C=C(C=C3O2)OS(=O)(=O)O)O)OC4C(C(C(C(O4)C(=O)O)O)O)O)O