Showing structure for (1s,2r,4s,5r,6s,9s,10s,11s,12s,13r)-2,12-bis(acetyloxy)-11-hydroxy-2,6,11-trimethyl-7-oxo-8,14-dioxatetracyclo[8.4.0.0¹,¹³.0⁵,⁹]tetradecan-4-yl (2z)-2-methylbut-2-enoate