Showing structure for (2r)-3-{2-[(1s)-3-[(1r)-1-carboxy-2-(3,4-dihydroxyphenyl)ethoxy]-1-(3,4-dihydroxyphenyl)-3-oxopropyl]-4,5-dihydroxyphenyl}-2-{[(2e)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxy}propanoic acid