Formula: C21H20O13S | Mol. Weight: 512.40 g/mol
IUPAC: 5,7-dihydroxy-4-oxo-2-phenyl-3-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromene-8-sulfonic acid
C1=CC=C(C=C1)C2=C(C(=O)C3=C(O2)C(=C(C=C3O)O)S(=O)(=O)O)OC4C(C(C(C(O4)CO)O)O)O