1 40U N-{(2r)-1-[(4s)-4-(4-chlorophenyl)-4-hydroxy-3,3-dimethylpiperidin-1-yl]-3-methyl-1-oxobutan-2-yl}-2-cyclopropylacetamide 1.000 2 2Q4 N-{(2r)-1-[(4s)-4-(4-chlorophenyl)-4-hydroxy-3,3-dimethylpiperidin-1-yl]-3-methyl-1-oxobutan-2-yl}-3-hydroxy-3-methylbutanamide 0.788