Using CC(C)(C)OC(=O)N1CCNCC1, O=Cc1ccc(Br)cc1F to produce CC(C)(C)OC(=O)N1CCN(Cc2ccc(Br)cc2F)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.