C=C(C)[C@@H]1CC[C@](C)(O)[C@H]2CC[C@@](C)(/C=C/C[C@]3(C)O[C@H]3C1)O2	(1S,2E,5S,7S,9R,12S,13R)-1,5,12-trimethyl-9-(prop-1-en-2-yl)-6,16-dioxatricyclo[11.2.1.0^{5,7}]hexadec-2-en-12-ol