Using O=[N+]([O-])c1cc(C(F)(C(F)(F)F)C(F)(F)F)ccc1O to produce Nc1cc(C(F)(C(F)(F)F)C(F)(F)F)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.