C/C1=C\CC(=O)/C(C)=C/[C@H]2[C@H](CC[C@H](C)CC(=O)C1)C2(C)C	(1S,2E,6E,11S,14S)-3,7,11,15,15-pentamethylbicyclo[12.1.0]pentadeca-2,6-diene-4,9-dione