1 1WN (betas)-nalpha-{4-[4-(4-aminophenyl)buta-1,3-diyn-1-yl]benzoyl}-N,beta-dihydroxy-beta-methyl-L-tyrosinamide 1.000 2 1WM (betas)-nalpha-{4-[4-(4-aminophenyl)buta-1,3-diyn-1-yl]benzoyl}-N,beta-dihydroxy-L-tyrosinamide 0.971 3 L53 4-[4-(4-aminophenyl)buta-1,3-diyn-1-yl]-N-[(2s,3s)-3-hydroxy-1-nitroso-1-oxobutan-2-yl]benzamide 0.800 4 ZH2 4-[4-(4-aminophenyl)buta-1,3-diyn-1-yl]-N-[(2s,3r)-3-hydroxy-1-(hydroxyamino)-1-oxobutan-2-yl]benzamide 0.800 5 2CW 4-[4-(4-aminophenyl)buta-1,3-diyn-1-yl]-N-[(2s,3r)-3-hydroxy-2-methyl-1-nitroso-1-oxobutan-2-yl]benzamide 0.778 6 3P3 N-[(1s,2r)-2-hydroxy-1-(hydroxycarbamoyl)propyl]-4-(4-phenylbuta-1,3-diyn-1-yl)benzamide 0.771 7 ZH4 4-[4-(3-aminophenyl)buta-1,3-diyn-1-yl]-N-[(2s,3r)-3-hydroxy-1-nitroso-1-oxobutan-2-yl]benzamide 0.750 8 1WL Nalpha-{4-[4-(4-aminophenyl)buta-1,3-diyn-1-yl]benzoyl}-N-hydroxy-L-histidinamide 0.737 9 5EN 4-[4-(4-aminophenyl)buta-1,3-diyn-1-yl]-N-[(2s,3s)-4,4-difluoro-3-hydroxy-1-(hydroxyamino)-3-methyl-1-oxobutan-2-yl]benzamide 0.737 10 5EM N-[(2s)-3-amino-1-(hydroxyamino)-3-methyl-1-oxobutan-2-yl]-4-[4-(4-aminophenyl)buta-1,3-diyn-1-yl]benzamide 0.730 11 5EP N~2~-{4-[4-(4-aminophenyl)buta-1,3-diyn-1-yl]benzoyl}-N-hydroxy-L-isoleucinamide 0.730