Using O=[N+]([O-])c1cc2ccccc2nc1Nc1ccc(O)cc1, CCOC(=O)C(C)Br to produce CCOC(=O)C(C)Oc1ccc(Nc2nc3ccccc3cc2[N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.