Using O=[N+]([O-])c1ccccc1C(O)c1cc(C(F)(F)F)nc2c(C(F)(F)F)cccc12 to produce Nc1ccccc1C(O)c1cc(C(F)(F)F)nc2c(C(F)(F)F)cccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.