丹酚酸E

Benzenepropanoic acid, a-[[(2E)-3-[2-[(1E)-1-[[(1R)-1-carboxy-2-(3,4-dihydroxyphenyl)ethoxy]carbonyl]-2-(3,4-dihydroxyphenyl)ethenyl]-3,4-dihydroxyphenyl]-1-oxo-2-propen-1-yl]oxy]-3,4-dihydroxy-,(aR)-