Using Cc1ccc(NCCNc2cccc(Cl)c2)cc1, O=CC(Cl)(Cl)Cl to produce Cc1ccc(N2CCN(c3cccc(Cl)c3)C2C(Cl)(Cl)Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.