Showing structure for (1r,2s,3r,4ar,5s,6r,8s,8ar)-5-[(2s,3as,6as)-2h,3h,3ah,6ah-furo[2,3-b]furan-2-yl]-8-(acetyloxy)-8a-[(acetyloxy)methyl]-3-hydroxy-5,6-dimethyl-hexahydro-2h-spiro[naphthalene-1,2'-oxiran]-2-yl (2s)-2-methylbutanoate