Using Brc1ccccn1, CC(C)(C)OC(=O)N1CCC2(CCNCC2)C1 to produce CC(C)(C)OC(=O)N1CCC2(CCN(c3ccccn3)CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.