Showing structure for (1r,2s,4s,5r,7e,9s,11e,14r,15r)-9,14-bis(acetyloxy)-4,8,12-trimethyl-16-methylidene-17-oxo-3,18-dioxatricyclo[13.3.0.0²,⁴]octadeca-7,11-dien-5-yl acetate