925211-81-0

1-Pyrrolidinecarboxylic acid,2-[(dimethylamino)carbonyl]-4-[[(2R)-2-[(2S,3S)-3-[(1R)-1-hydroxyethyl]-4-oxo-2-azetidinyl]-1-oxopropyl]thio]-, (4-nitrophenyl)methyl ester,(2S,4S)-