C=C1C(=O)O[C@]2(C)CC[C@@H]1C[C@@H]1O[C@@]1(C)CC/C=C(\C)CC[C@H]2OC(C)=O	[(1R,3S,5S,8E,12R,13R)-5,9,13-trimethyl-16-methylidene-15-oxo-4,14-dioxatricyclo[11.3.2.03,5]octadec-8-en-12-yl] acetate