Showing structure for (1r,3s,5s,6ar,7s,8s,10r,10ar)-1,3,10-tris(acetyloxy)-7,8-dimethyl-7-(3-methylidenepent-4-en-1-yl)-1h,3h,5h,6h,6ah,8h,9h,10h-naphtho[1,8a-c]furan-5-yl 2-methylbutanoate