Using CN1CCC2(CC1)CN(c1ccc(Cl)cc1)c1ccccc12, N#CBr to produce N#CN1CCC2(CC1)CN(c1ccc(Cl)cc1)c1ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.