Using Cc1cc(OC(=O)C(C)(C)C)cc(Br)c1NC(=O)c1cccc([N+](=O)[O-])c1 to produce Cc1cc(O)cc(Br)c1NC(=O)c1cccc([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.