Using O=C(O)c1n[nH]cc1[N+](=O)[O-], Nc1ccc(F)cc1 to produce O=C(Nc1ccc(F)cc1)c1n[nH]cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.