Using O=[N+]([O-])c1cc(N2CCN(CCF)CC2)cc(C(F)(F)F)c1 to produce Nc1cc(N2CCN(CCF)CC2)cc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.