1 R5V N-{(1r)-2-(hydroxyamino)-2-oxo-1-[4-(1h-pyrazol-1-yl)phenyl]ethyl}-2,2-dimethylpropanamide 1.000 2 4TK N-[(1r)-1-(4-bromophenyl)-2-(hydroxyamino)-2-oxoethyl]-2,2-dimethylpropanamide 0.750