(E)-(2S,5S,6R)-2-Benzyloxy-6-(2,5-dimethoxy-3-nitro-phenyl)-6-methoxy-5-methyl-hex-3-enoic acid methyl ester

[(2R,3S,5S,6R)-2-Benzyloxy-6-(2,5-dimethoxy-3-nitro-phenyl)-3,6-dimethoxy-5-methyl-hexyloxy]-tert-butyl-dimethyl-silane