1-(benzyl)-4-(dimethylamino)isonipecotamide

1-benzyl-4-(dimethylamino)piperidine-4-carboxamide

4-(dimethylamino)-1-(phenylmethyl)piperidine-4-carboxamide

4-(Dimethylamino)-1-(phenylmethyl)-4-piperidinecarboxamide