Using C#CCC(O)(C(Oc1ccc(Cl)cc1)n1cncn1)C(C)(C)C, BrBr to produce CC(C)(C)C(O)(CC#CBr)C(Oc1ccc(Cl)cc1)n1cncn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.