121521-90-2 3-(1-Carboxy-2-(3,4-dihydroxyphenyl)ethyl) 4-(3-(1-carboxy-2-(3,4-dihydroxyphenyl)ethoxy)-3-oxo-1-propenyl)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-7-hydroxy-3-benzofurancarboxylate (2S-(2alpha,3beta(S*),4(E(S*))))- 3-Benzofurancarboxylic acid, 4-(3-(1-carboxy-2-(3,4-dihydroxyphenyl)ethoxy)-3-oxo-1-propenyl)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-7-hydroxy-, 3-(1-carboxy-2-(3,4-dihydroxyphenyl)ethyl) ester, (2S-(2alpha,3beta(S*),4(E(S*))))- Lithospermic acid B