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