Using ClCc1ccc(Cl)cc1Cl, COC(=O)c1ccc2c(C)n[nH]c2c1 to produce COC(=O)c1ccc2c(C)nn(Cc3ccc(Cl)cc3Cl)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.