Showing structure for methyl 5-ethenyl-4-{[6-({4-ethenyl-8-oxo-3h,4h,4ah,5h,6h-pyrano[3,4-c]pyran-3-yl}oxy)-7,8-dihydroxy-hexahydro-2h-pyrano[3,2-d][1,3]dioxin-2-yl]methyl}-6-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylate