Using O=N[O-], Nc1ccc2cnn(-c3c(Cl)cc(C(F)(F)F)cc3Cl)c2c1 to produce Oc1ccc2cnn(-c3c(Cl)cc(C(F)(F)F)cc3Cl)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.