Showing structure for (1r,2r,3r,4s,5s,7r,8r,9r,10r,11s,13s,15s,16r)-4,7,8,15,16-pentakis(acetyloxy)-5,9,12,12-tetramethyl-17-oxapentacyclo[7.6.2.0¹,¹⁰.0³,⁷.0¹¹,¹³]heptadecan-2-yl (2e)-2-methylbut-2-enoate