Using O=[N+]([O-])c1c(Nc2ccc(I)cc2F)c(F)c(F)c2ccoc12 to produce Nc1c(Nc2ccc(I)cc2F)c(F)c(F)c2ccoc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.