(2S)-N-(4-fluoro-3-oxo-1-phenylbutan-2-yl)-4-methyl-2-(3-phenylpropanoylamino)pentanamide
(2S)-N-[3-fluoro-2-oxo-1-(phenylmethyl)propyl]-4-methyl-2-(3-phenylpropanoylamino)pentanamide
(2S)-N-[3-fluoro-2-oxo-1-(phenylmethyl)propyl]-4-methyl-2-[(1-oxo-3-phenylpropyl)amino]pentanamide
(2S)-N-[1-(benzyl)-3-fluoro-2-keto-propyl]-4-methyl-2-(3-phenylpropanoylamino)valeramide
(2S)-N-(4-fluoro-3-oxo-1-phenyl-butan-2-yl)-4-methyl-2-(3-phenylpropanoylamino)pentanamide