Using O=C(Cl)c1cc([N+](=O)[O-])c(F)cc1Cl, Nc1ccc(OC(F)(F)F)cc1 to produce O=C(Nc1ccc(OC(F)(F)F)cc1)c1cc([N+](=O)[O-])c(F)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.