(2S)-1-[(2S)-2-[[(2S)-2-(phenylmethoxycarbonylamino)propanoyl]amino]propanoyl]pyrrolidine-2-carboxylic acid

(2S)-1-[(2S)-2-[[(2S)-2-aminopropanoyl]amino]propanoyl]-N-[(2S)-3-methyl-1-(4-nitroanilino)-1-oxobutan-2-yl]pyrrolidine-2-carboxamide