1-Azetidinecarboxylic acid,3-[(1R)-1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-2-[(1R)-1-methyl-2-oxoethyl]-4-oxo-, 1,1-dimethylethyl ester, (2R,3S)-
CAS No. 256371-33-2