| Inhibitor 1 | N-(3-chlorophenyl)-1-(naphthalene-2-carbonyl)piperidine-4-carboxamide |
| Inhibitor 2 | N-(3-chlorophenyl)-1-(3-methoxybenzoyl)piperidine-4-carboxamide |
| Inhibitor 3 | N-(3-chlorophenyl)-1-(4-hydroxybenzoyl)piperidine-4-carboxamide |
| Inhibitor 4 | 1-(4-chlorobenzoyl)-N-(3-chlorophenyl)piperidine-4-carboxamide |