Using O=C1NC(=O)c2ccccc21, O=[N+]([O-])c1ccc(CBr)c(F)c1 to produce O=C1c2ccccc2C(=O)N1Cc1ccc([N+](=O)[O-])cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.