Using COC(=O)c1n[nH]c2ccccc12, ClCc1ccc(Cl)cc1Cl to produce COC(=O)c1nn(Cc2ccc(Cl)cc2Cl)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.