Showing structure for 6-(acetyloxy)-4-(butanoyloxy)-3,3a-dihydroxy-3,6,9-trimethyl-7-[(3-methylbutanoyl)oxy]-2-oxo-4h,5h,6ah,7h,8h,9bh-azuleno[4,5-b]furan-8-yl 2-methylbut-2-enoate