Showing structure for 13,20-bis(acetyloxy)-7-(furan-3-yl)-1,8,12,17,17-pentamethyl-5,15-dioxo-3,6,16-trioxapentacyclo[9.9.0.0²,⁴.0²,⁸.0¹²,¹⁸]icosan-10-yl acetate