Using CC(C)(C)OC(=O)Nc1ccc(Oc2ccnc3cc(I)sc23)c(F)c1, [O-][n+]1ccccc1Br to produce CC(C)(C)OC(=O)Nc1ccc(Oc2ccnc3cc(-c4cccc[n+]4[O-])sc23)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.