Using CC1(C)C(=O)NC(=O)c2c1cc([N+](=O)[O-])c(N)c2Br to produce CC1(C)C(=O)NC(=O)c2cc3nc(-c4ccncc4)[nH]c3cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.