(2S,3S,4R)-3-[[[(2S,3S,4R)-3-Azido-4-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-1-(phenylmethyl)-2-azetidinyl]carbonyl]amino]-4-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-1-(phenylmethyl)-2-azetidinecarboxylic acid methyl ester | | 1992035-15-0 | |