Showing structure for (2r)-4-{[(1s,2s,4r,7e,10r,11r)-4,8-dimethyl-12-methylidene-13-oxo-3,14-dioxatricyclo[9.3.0.0²,⁴]tetradec-7-en-10-yl]oxy}-1-hydroxy-3-methylidene-4-oxobutan-2-yl (2z)-2-methylbut-2-enoate