Using C[N+](=O)[O-], COC(=O)c1c(F)c(F)c(F)c(F)c1C(=O)OC to produce COC(=O)c1c(F)c(F)c(C[N+](=O)[O-])c(F)c1C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.