Showing structure for (3ar,4r,9r,11as)-9-(acetyloxy)-6,10-dimethyl-3-methylidene-2-oxo-3ah,4h,5h,8h,9h,11ah-cyclodeca[b]furan-4-yl (2e)-4-hydroxy-2-({[(2e)-2-methylbut-2-enoyl]oxy}methyl)but-2-enoate