Showing structure for 3-{[9-(acetyloxy)-6,10-dimethyl-3-methylidene-2-oxo-3ah,4h,5h,8h,9h,11ah-cyclodeca[b]furan-4-yl]oxy}-2-(2-hydroxyethylidene)-3-oxopropyl 2-methyl-4-oxobut-2-enoate