Using CCCc1c(O)ccc(C(C)=O)c1O, O=[N+]([O-])c1ccc(CBr)cc1 to produce CCCc1c(OCc2ccc([N+](=O)[O-])cc2)ccc(C(C)=O)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.