Using Nc1cc(Cl)c(Cl)cc1N, COc1ccc(C=O)cc1[N+](=O)[O-] to produce COc1ccc(-c2nc3cc(Cl)c(Cl)cc3[nH]2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.