Using O=[N+]([O-])c1cc(Cl)c(Br)cc1F, CC(C)(C)CN1CC2(CCCC(CN)C2)OC1=O to produce CC(C)(C)CN1CC2(CCCC(CNc3cc(Br)c(Cl)cc3[N+](=O)[O-])C2)OC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.