(1R,4R)-4-(tert-Butyl-dimethyl-silanyloxy)-1-[4-(2-trimethylsilanyl-[1,3]dioxolan-2-yl)-butyl]-cyclopent-2-enol

(1S,4S)-4-(tert-Butyl-dimethyl-silanyloxy)-1-[6-(tert-butyl-dimethyl-silanyloxy)-hexyl]-cyclopent-2-enol