CAS: 121521-90-2 Chemical Name: Lithospermic acid B; Danfensuan B; (2R)-2-[(E)-3-[(2S,3S)-3-[(1R)-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