Using CCCC1CCC(C2CCC(c3ccc(Br)cc3)CC2)CC1, C#CCCC to produce CCCC#Cc1ccc(C2CCC(C3CCC(CCC)CC3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.