IUPAC: 2-{[(2E)-3-(3-{[1-carboxy-2-(3,4-dihydroxyphenyl)ethoxy]carbonyl}-2-(3,4-dihydroxyphenyl)-7-hydroxy-2,3-dihydro-1-benzofuran-4-yl)prop-2-enoyl]oxy}-3-(3,4-dihydroxyphenyl)propanoic acid

SMILES: OC(=O)C(Cc1ccc(O)c(O)c1)OC(=O)\C=C\c1ccc(O)c2OC(C(C(=O)OC(Cc3ccc(O)c(O)c3)C(O)=O)c12)c1ccc(O)c(O)c1