Showing structure for 5-[5-(acetyloxy)-3-methylpent-3-en-1-yl]-1,1,4a,6-tetramethyl-3-{[3,4,5-tris(acetyloxy)oxan-2-yl]oxy}-2,3,4,5,8,8a-hexahydronaphthalen-2-yl 2-methylbut-2-enoate