Using C[N+](=O)[O-], CS(=O)(=O)Nc1ccc(F)c(C(=O)O)c1 to produce CS(=O)(=O)Nc1ccc(F)c(C(=O)C[N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.