Showing structure for [(2s,4ar,6r,7s,8s,8ar)-2-(3,4-dihydroxyphenyl)-7,8-dihydroxy-hexahydro-2h-pyrano[2,3-b][1,4]dioxin-6-yl]methyl (2e)-3-(3,4-dihydroxyphenyl)prop-2-enoate