C=C1CC/C=C(\C)CC[C@@H]2O[C@@]2(C)CC/C(C(C)C)=C\[C@@H]1O (1S,4E,6S,10E,14S)-1,11-dimethyl-7-methylidene-4-propan-2-yl-15-oxabicyclo[12.1.0]pentadeca-4,10-dien-6-ol