Using O=[N+]([O-])c1ccc2nc(OC(c3cccnc3)C(F)(F)F)c(Cl)nc2c1 to produce Nc1ccc2nc(OC(c3cccnc3)C(F)(F)F)c(Cl)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.