Showing structure for (1r,2r,4s,7e,10r,11s)-11-hydroxy-4,8-dimethyl-12-methylidene-13-oxo-3,14-dioxatricyclo[9.3.0.0²,⁴]tetradec-7-en-10-yl (2s,3r)-2,3-dimethyloxirane-2-carboxylate