Using Cc1cc(-c2ccc(CC(=O)Nc3ccc(N4CCNCC4)cn3)cc2)ccn1, N#CBr to produce Cc1cc(-c2ccc(CC(=O)Nc3ccc(N4CCN(C#N)CC4)cn3)cc2)ccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.