Using CC(C)(C)OC(=O)n1ccc2cc(Oc3ccc(C(=O)Nc4ccc(Br)cc4)cc3[N+](=O)[O-])ccc21 to produce CC(C)(C)OC(=O)n1ccc2cc(Oc3ccc(C(=O)Nc4ccc(Br)cc4)cc3N)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.