Showing structure for (1r,2r,4r,6r,7z,9z,11r)-4,9-dimethyl-14-methylidene-13-oxo-5,12-dioxatricyclo[9.3.0.0⁴,⁶]tetradeca-7,9-dien-2-yl (2z)-2-(hydroxymethyl)but-2-enoate