Showing structure for (3as,4s,5r,6r,10r,11ar)-5,6-dihydroxy-6,10-dimethyl-3-methylidene-2,7-dioxo-3ah,4h,5h,10h,11h,11ah-cyclodeca[b]furan-4-yl (2z)-2-methylbut-2-enoate