Showing structure for [3,4-bis(acetyloxy)-6-({4-ethenyl-4a-hydroxy-8-oxo-3h,4h,5h,6h-pyrano[3,4-c]pyran-3-yl}oxy)-5-hydroxyoxan-2-yl]methyl 2-hydroxy-3-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}benzoate