Using O=[N+]([O-])c1cc(Br)nc(Br)c1, COC(=O)c1ccc(F)cc1O to produce COC(=O)c1ccc(F)cc1Oc1cc(Br)nc(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.