Using O=[N+]([O-])c1cc(F)ccc1F, CCOC(=O)c1cn(C)nc1N to produce CCOC(=O)c1cn(C)nc1Nc1ccc(F)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.