Showing structure for (1s,2s,4s,6r,8r,9z,11s)-8-(acetyloxy)-4,9-dimethyl-14-methylidene-13-oxo-5,12-dioxatricyclo[9.3.0.0⁴,⁶]tetradec-9-en-2-yl (2r)-2-methylbutanoate