Showing structure for methyl 2-{4-[(acetyloxy)(furan-3-yl)methyl]-7a-formyl-4-methyl-2-oxo-3-propanoyl-tetrahydro-3h-1-benzofuran-7-yl}-2,8,8-trimethyl-3-oxo-6-oxabicyclo[3.2.1]octane-7-carboxylate