Using CC(C)(C)OC(=O)N1CCN(c2ncc[nH]c2=O)CC1, Fc1cc(F)c(CBr)cc1F to produce CC(C)(C)OC(=O)N1CCN(c2nccn(Cc3cc(F)c(F)cc3F)c2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.