Using O=[N+]([O-])c1cccc(CBr)c1, CCCc1c(O)ccc(C(C)=O)c1O to produce CCCc1c(OCc2cccc([N+](=O)[O-])c2)ccc(C(C)=O)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.