Using BrCc1ccccc1, CC(C)(C)OC(=O)N1CC2CCNCC2C1 to produce CC(C)(C)OC(=O)N1CC2CCN(Cc3ccccc3)CC2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.