Using O=[N+]([O-])c1ccc2cnn(-c3ncc(C(F)(F)F)cc3Cl)c2c1 to produce Nc1ccc2cnn(-c3ncc(C(F)(F)F)cc3Cl)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.