Using CCOC(=O)CBr, O=[N+]([O-])c1ccc(O)cc1[N+](=O)[O-] to produce CCOC(=O)COc1ccc([N+](=O)[O-])c([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.