Using CC(C)(C)OC(=O)N1CCC(Nc2cc(Br)ccc2[N+](=O)[O-])C1 to produce CC(C)(C)OC(=O)N1CCC(Nc2cc(Br)ccc2N)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.