Showing structure for 2-[2-(1,2,4a-trimethyl-5-methylidene-hexahydro-2h-naphthalen-1-yl)-1-(acetyloxy)ethyl]-4-({3-[2-(1,2,4a-trimethyl-5-methylidene-hexahydro-2h-naphthalen-1-yl)ethylidene]-5-(acetyloxy)oxolan-2-yl}oxy)but-2-en-1-yl acetate