(2R-(2alpha,3beta(R*),4(E(R*))))-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 115939-25-8 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, (2R-(2alpha,3beta(R*),4(E(R*))))- Salvianolic acid B