Showing structure for (1r,2e,4s,8r,9r,11r,12r)-1,12-dimethoxy-2,11-dimethyl-7-methylidene-6-oxo-5,14-dioxatricyclo[9.2.1.0⁴,⁸]tetradec-2-en-9-yl 2-methylpropanoate