1-{(4S,5S,6R)-6-[(S)-2-(tert-Butyl-diphenyl-silanyloxy)-1-methyl-ethyl]-2,2,5-trimethyl-[1,3]dioxan-4-yl}-ethanone

(3S,4R,5S)-4-(tert-Butyl-dimethyl-silanyloxy)-3,5-dimethyl-1-trimethylsilanyloxy-cyclopentene