N-benzyloxycarbonyl-N-methyl-D-phenylalanyl-L-proline cyclohexylammonium salt   、                                                                                      
benzyl (NE)-N-[amino-[(3S)-3-amino-2-oxopiperidin-1-yl]methylidene]carbamate;hydrochloride                                                                                                                                                                                                                                                                                                          生成                                                 benzyl N-methyl-N-[(2R)-1-oxo-1-[(2S)-2-[[(3S)-2-oxo-1-[(E)-N'-phenylmethoxycarbonylcarbamimidoyl]piperidin-3-yl]carbamoyl]pyrrolidin-1-yl]-3-phenylpropan-2-yl]carbamate