Using O=[N+]([O-])c1cc(-c2ccccc2C(F)(F)F)ccc1Oc1ccc(-c2ccccc2C(F)(F)F)cc1[N+](=O)[O-] to produce Nc1cc(-c2ccccc2C(F)(F)F)ccc1Oc1ccc(-c2ccccc2C(F)(F)F)cc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.