Showing structure for 2-[(3-ethenyl-3,4a,7,7,10a-pentamethyl-2-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-octahydro-1h-naphtho[2,1-b]pyran-8-yl)oxy]-6-(hydroxymethyl)oxane-3,4,5-triol