tert-Butyl-((E)-(1R,4R)-1-{(R)-[2-((1R,3S)-4,4-dimethoxy-1,3-dimethyl-butyl)-[1,3]dithian-2-yl]-methoxy-methyl}-4-[1,3]dithian-2-yl-2-methyl-pent-2-enyloxy)-dimethyl-silane

tert-Butyl-((E)-(1R,4R)-1-{(S)-[2-((1R,3S)-4,4-dimethoxy-1,3-dimethyl-butyl)-[1,3]dithian-2-yl]-methoxy-methyl}-4-[1,3]dithian-2-yl-2-methyl-pent-2-enyloxy)-dimethyl-silane