Showing structure for (4ar,5r,6s)-5-ethenyl-4a-hydroxy-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-({[(2s,3r,4s,5s)-3,4,5-trihydroxyoxan-2-yl]oxy}methyl)oxan-2-yl]oxy}-3h,4h,5h,6h-pyrano[3,4-c]pyran-1-one