3-((2S,4S)-4-Mercapto-1-(((4-nitrobenzyl)oxy)carbonyl)pyrrolidine-2-carboxamido)benzoic acid

3-[[(2S,4S)-1-[(4-nitrophenyl)methoxycarbonyl]-4-sulfanylpyrrolidine-2-carbonyl]amino]benzoic acid

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