Using O=C1CCC(=O)N1Br, Cc1cc(C(F)(F)F)cc([N+](=O)[O-])c1I to produce O=[N+]([O-])c1cc(C(F)(F)F)cc(CBr)c1I, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.