Using O=[N+]([O-])c1ccc(Br)c(Cl)c1, COc1cccc2c1C(=O)c1cccc(N)c1C2=O to produce COc1cccc2c1C(=O)c1cccc(Nc3ccc([N+](=O)[O-])cc3Cl)c1C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.