Formula: C21H20O11 | Mol. Weight: 448.40 g/mol
IUPAC: (2Z)-2-[(3,4-dihydroxyphenyl)methylidene]-6-hydroxy-7-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-1-benzofuran-3-one
C1=CC(=C(C=C1C=C2C(=O)C3=C(O2)C(=C(C=C3)O)OC4C(C(C(C(O4)CO)O)O)O)O)O