Showing structure for (2z,4s,7r,8r,9r,11r)-7-(chloromethyl)-7-hydroxy-2,11-dimethyl-6,12-dioxo-5,14-dioxatricyclo[9.2.1.0⁴,⁸]tetradeca-1(13),2-dien-9-yl (2z)-2-methylbut-2-enoate