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(2007/10/02)N-<2-(3-benzyloxy-2-oxo-4-phenylazetidin-1-yl)propanoyl>-L-proline t-butyl ester
N-<2-(3-benzyloxy-2-oxo-4-phenylazetidin-1-yl)propanoyl>-L-proline t-butyl ester
N-chloroacetyl-L-alanyl-L-proline t-butyl ester
N-<2-(3-chloro-2-oxo-4-phenylazetidin-1-yl)propanoyl>-L-proline t-butyl ester
(S)-1-[(S)-2-((R)-2-Acetoxy-3-phenyl-propionylamino)-propionyl]-pyrrolidine-2-carboxylic acid tert-butyl ester