Using CCOCC, CCCC(CCCl)OC(c1ccccc1)(c1ccccc1)c1ccccc1 to produce C#CCCC(CCC)OC(c1ccccc1)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.