Using O=[N+]([O-])c1ccc(Oc2ccc(C(Cc3ccncc3)c3ccc(OC(F)F)c(OC(F)F)c3)cn2)cc1 to produce Nc1ccc(Oc2ccc(C(Cc3ccncc3)c3ccc(OC(F)F)c(OC(F)F)c3)cn2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.