The SMILES Cc1ccc(-n2c(=O)[nH]cc(C(=O)N3CCc4ccccc43)c2=O)cc1 is not inhibiting CYP2D6.
The {#molecule |!}{SMILES__description} {SMILES#} is {CYP2D6_inhibition#not &NULL}{CYP2D6_inhibition__names__gerund}.