Using ClCc1cccc(Cl)c1, COC(=O)c1ccc(NCc2cccc(Cl)c2)cn1 to produce COC(=O)c1ccc(N(Cc2cccc(Cl)c2)Cc2cccc(Cl)c2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.