Showing structure for 8,8,13,17-tetramethyl-16-[1-(5-methyl-6-oxo-2,3-dihydropyran-2-yl)ethyl]-6-oxo-7-oxatetracyclo[10.7.0.0³,⁹.0¹³,¹⁷]nonadeca-1(12),3-dien-14-yl acetate