Showing structure for methyl (1s,2s,4s,5z,7z,9r,10s,11r)-4-[(acetyloxy)methyl]-10-[(2r,3r)-2,3-dimethyloxirane-2-carbonyloxy]-9-hydroxy-12-methylidene-13-oxo-3,14-dioxatricyclo[9.3.0.0²,⁴]tetradeca-5,7-diene-8-carboxylate