1 LPF 1,1,1-trifluoro-3-((N-acetyl)-L-leucylamido)-4-phenyl-butan-2-one(N-acetyl-L-leucyl-L-phenylalanyl trifluoromethyl ketone) 1.000 2 FAF 2-acetylamino-4-methyl-pentanoic acid (1-formyl-2-phenyl-ethyl)-amide 0.846 3 HIN (2s) N-acetyl-L-alanyl-alphal-phenylalanyl-chloroethylketone 0.714 4 K7I L-alanyl-N-[(1s,2r)-1-benzyl-2-hydroxypropyl]-L-alaninamide 0.714