1 26S (2r)-4-(2,6-dimethoxypyrimidin-4-yl)-1-[(4-ethylphenyl)sulfonyl]-N-(4-methoxybenzyl)piperazine-2-carboxamide 1.000 2 26F (2r)-4-(2,6-dimethoxypyrimidin-4-yl)-N-(4-methoxybenzyl)-1-{[4-(trifluoromethoxy)phenyl]sulfonyl}piperazine-2-carboxamide 0.841