Showing structure for (1r,2s,4s,6r,9z,11r)-4-[(acetyloxy)methyl]-9-(hydroxymethyl)-14-methylidene-13-oxo-5,12-dioxatricyclo[9.3.0.0⁴,⁶]tetradec-9-en-2-yl 2-methylprop-2-enoate