Using O=C(Oc1ccc(O)c([N+](=O)[O-])c1)c1ccccc1, COC(=O)CBr to produce COC(=O)COc1ccc(OC(=O)c2ccccc2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.