Showing structure for methyl 1-[(6-{[(5-ethenyl-1-oxo-6-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-3h,4h,4ah,5h,6h-pyrano[3,4-c]pyran-3-yl)oxy]methyl}-3,4,5-trihydroxyoxan-2-yl)oxy]-6-hydroxy-7-methyl-1h,4ah,5h,6h,7h,7ah-cyclopenta[c]pyran-4-carboxylate