tert-Butyl-{(1S,2S,4S,5S)-4-[2-((R)-3-ethyl-1-methyl-cyclopent-2-enyl)-ethyl]-4,6,6-trimethyl-bicyclo[3.1.1]hept-2-yloxy}-dimethyl-silane

(S)-4-{2-[(1S,2S,4S,5S)-4-(tert-Butyl-dimethyl-silanyloxy)-2,6,6-trimethyl-bicyclo[3.1.1]hept-2-yl]-ethyl}-2,4-dimethyl-cyclohex-2-enone