Showing structure for 6-(acetyloxy)-3-ethenyl-10b-hydroxy-3,4a,7,7,10a-pentamethyl-1-oxo-10-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-hexahydro-2h-naphtho[2,1-b]pyran-5-yl acetate