Showing structure for (1s,2s,4r,7e,10s)-12-[(acetyloxy)methyl]-4,8-dimethyl-6,13-dioxo-3,14-dioxatricyclo[9.3.0.0²,⁴]tetradeca-7,11-dien-10-yl (2r)-2-methyloxirane-2-carboxylate