Using Nc1ccc(Cl)cc1Cl, COc1cc2c(Cl)c(C#N)cnc2cc1NC(C)=O to produce COc1cc2c(Nc3ccc(Cl)cc3Cl)c(C#N)cnc2cc1NC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.