2-[[2-(phenylmethoxycarbonylamino)acetyl]amino]benzoic acid

苄氧羰基-甘氨酰-D-苯丙氨酸

Z-GLY-SER-OH

benzyl 5-oxo-1,3-oxazolidine-3-carboxylate

N,N'-bis-benzyloxycarbonyl-N,N'-methanediyl-bis-glycine