Using O=S(=O)(c1ccccc1)n1c2ccc(C#Cc3ccccc3)cc2c2cc(Cl)cnc21 to produce O=S(=O)(c1ccccc1)n1c2ccc(CCc3ccccc3)cc2c2cc(Cl)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.