Showing structure for methyl (3as,4s,5s,11s,11as)-5-[(2s)-butan-2-yloxy]-11-hydroxy-4-{[(2z)-2-methylbut-2-enoyl]oxy}-3,10-dimethylidene-2-oxo-3ah,4h,5h,8h,9h,11h,11ah-cyclodeca[b]furan-6-carboxylate