(1S,2R,5S,10S,11S,14R,15R)-14-[(2R,3E,5S)-5-ethyl-6-methylhept-3-en-2-yl]-2,15-dimethyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadec-7-en-5-ol
(1S,2R,5S,10S,11S,14R,15R)-14-[(2R,3E,5S)-5-ethyl-6-methylhept-3-en-2-yl]-2,15-dimethyltetracyclo[8.7.0.02,7.011,15]heptadec-7-en-5-ol