Using CCCCC[C@H]1CC[C@H](CCc2ccc(C=C(Br)Br)cc2)CC1 to produce C#Cc1ccc(CC[C@H]2CC[C@H](CCCCC)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.