Using CC(=O)N(Cc1ccc(C#N)cc1Cl)c1nc(Br)ccc1[N+](=O)[O-] to produce Cc1nc2ccc(Br)nc2n1Cc1ccc(C#N)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.