tert-butyl-[4-{5-[3-(4-methoxybenzyloxy)-propyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-1-(1-methoxymethoxyheptyl)-but-3-ynyloxy]-dimethylsilane

8-(1-methoxymethoxyheptyl)-2,2-dimethyl-3a,4,5,8,9,11a-hexahydro-1,3,7-trioxa-cyclopentacyclodecen-6-one