1 8VU (R)-4-((R)-3-amino-4-(2,4,5-trifluorophenyl)butanoyl)-3-(tert-butoxymethyl)piperazine-2-one 1.000 2 8OL (S)-4-((R)-3-amino-4-(2,4,5-trifluorophenyl)butanoyl)-3-(tert-butoxymethyl)piperazin-2-one 1.000 3 8O3 (R)-4-(3-amino-4-(2,4,5-trifluorophenyl)butanoyl)piperazin-2-one 0.786 4 565 (3r)-4-[(3r)-3-amino-4-(2,4,5-trifluorophenyl)butanoyl]-3-methyl-1,4-diazepan-2-one 0.733