Using CC12CC3(C)CC(CC(Br)Br)(C1)CC(C14CC5(C)CC(C)(CC(CC(Br)Br)(C5)C1)C4)(C2)C3 to produce C#CC12CC3(C)CC(C)(C1)CC(C14CC5(C)CC(C)(CC(C#C)(C5)C1)C4)(C3)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.