N-[(1S)-7-(hydroxyamino)-7-oxo-1-(phenylcarbamoyl)heptyl]-2-oxopyrrolidine-3-carboxamide

(2S)-N8-(benzyloxy)-2-(2-oxo-4-phenylpyrrolidine-3-carboxamido)-N1-phenyloctanediamide

N-[(1S)-7-(hydroxyamino)-7-oxo-1-(phenylcarbamoyl)heptyl]-2-oxo-4-phenylpyrrolidine-3-carboxamide

methyl (S)-8-oxo-7-((S)-6-oxopiperidine-2-carboxamido)-8-(phenethylamino)octanoate