{(E)-(S)-4-((1R,2R,5R,6R,8R)-6,8-Bis-methoxymethoxy-6-methyl-1-vinyl-bicyclo[3.2.1]oct-2-yl)-1-[2-(4-methoxy-benzyloxy)-1,1-dimethyl-ethyl]-5-phenylsulfanyl-pent-3-enyloxy}-tert-butyl-dimethyl-silane