Using COc1cc(O)cc(OCc2ccccc2)c1[N+](=O)[O-], COC(=O)CBr to produce COC(=O)COc1cc(OC)c([N+](=O)[O-])c(OCc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.