1 16U N-(3-chlorobenzyl)-1-(4-methylpentanoyl)-L-prolinamide 1.000 2 21U D-leucyl-N-(3-chlorobenzyl)-L-prolinamide 0.958 3 19U 1-[(2r)-2-aminobutanoyl]-N-(3-chlorobenzyl)-L-prolinamide 0.875 4 26U N-(4-carbamimidoylbenzyl)-1-(4-methylpentanoyl)-L-prolinamide 0.846 5 31U D-leucyl-N-(4-carbamimidoylbenzyl)-L-prolinamide 0.815 6 24U 1-butanoyl-N-(4-carbamimidoylbenzyl)-L-prolinamide 0.769 7 29U 1-[(2r)-2-aminobutanoyl]-N-(4-carbamimidoylbenzyl)-L-prolinamide 0.741