(2S,4R)-1-((S)-2-(3-ethoxybenzamido)propanoyl)-4-hydroxy-N-(4-(4-methylthiazol-5-yl)benzyl)pyrrolidine-2-carboxamide

methyl 4-(((S)-1-(((S)-1-((2S,4R)-4-hydroxy-2-((4-(4-methylthiazol-5-yl)benzyl)carbamoyl)pyrrolidin-1-yl)-1-oxopropan-2-yl)amino)-4-methyl-1-oxopentan-2-yl)amino)-4-oxobutanoate

4-(((S)-1-(((S)-1-((2S,4R)-4-hydroxy-2-((4-(4-methylthiazol-5-yl)benzyl)carbamoyl)pyrrolidin-1-yl)-1-oxopropan-2-yl)amino)-4-methyl-1-oxopentan-2-yl)amino)-4-oxobutanoic acid

(2S,4R)-4-hydroxy-1-((S)-2-((S)-2-(2-methoxyacetamido)-4-methylpentanamido)propanoyl)-N-(4-(4-methylthiazol-5-yl)benzyl)pyrrolidine-2-carboxamide

(2S,4R)-4-hydroxy-1-((S)-2-((S)-2-(3-methoxypropanamido)-4-methylpentanamido)propanoyl)-N-(4-(4-methylthiazol-5-yl)benzyl)pyrrolidine-2-carboxamide