Using CS(=O)(=O)N1CCN(c2ccc(C(=O)CCc3ccc(NC(=O)C(F)(F)F)cc3)cc2)CC1 to produce CS(=O)(=O)N1CCN(c2ccc(C(=O)CCc3ccc(N)cc3)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.