Using C=CCBr, CCOC(=O)C(C)c1ccc(O)c([N+](=O)[O-])c1 to produce C=CCOc1ccc(C(C)C(=O)OCC)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.