CC[C@@H](/C=C/[C@@H](C)[C@H]1CC[C@H]2C3=C[C@@H]4O[C@@]45C[C@@H](O)CC[C@]5(C)[C@H]3CC[C@]12C)C(C)C (1S,2R,5S,7R,9S,12R,15R,16R)-15-[(E,2R,5R)-5-ethyl-6-methylhept-3-en-2-yl]-2,16-dimethyl-8-oxapentacyclo[9.7.0.02,7.07,9.012,16]octadec-10-en-5-ol