Chemical Name:(2S)-1-[(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoyl]pyrrolidine-2-carboxylic acid hydrogen (Z)-butenedioate (as per EP) ; 1-[N-[(S)-1-Carboxy-3-phenylpropyl]-l-alanyl]-l-proline 1'-ethyl ester, maleate (1:1) (as per USP)
