Using O=[N+]([O-])O, NC1=N[C@@]2(c3cccc(F)c3F)CO[C@H](C(F)F)[C@H]2CS1 to produce NC1=N[C@@]2(c3cc([N+](=O)[O-])cc(F)c3F)CO[C@H](C(F)F)[C@H]2CS1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.