Showing structure for (2s,6r,7r,9r,12r,13r)-13-[(acetyloxy)methyl]-12-hydroxy-9-methyl-5-methylidene-4-oxo-3,14-dioxatricyclo[7.4.1.0²,⁶]tetradecan-7-yl (2z)-2-[(acetyloxy)methyl]but-2-enoate