Using CC(C)(C)OC(=O)N1C[C@@H](Nc2ccc(Br)cc2[N+](=O)[O-])C[C@H]1CO to produce O=[N+]([O-])c1cc(Br)ccc1N[C@@H]1CN[C@H](CO)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.