CC(C)/C1=C\[C@@H]2[C@H](CC[C@@]2(C)O)[C@@](O)(CO)CC[C@@H]2O[C@@]2(C)CC1 (1S,2R,5S,7S,10Z,12R,13R)-2-(hydroxymethyl)-7,13-dimethyl-10-propan-2-yl-6-oxatricyclo[10.3.0.05,7]pentadec-10-ene-2,13-diol