Showing structure for [(2r,3s,4r,5s,6r)-6-{[(3s,4r,4as)-4-ethenyl-8-oxo-3h,4h,4ah,5h,6h-pyrano[3,4-c]pyran-3-yl]oxy}-3,4,5-tris(acetyloxy)oxan-2-yl]methyl acetate