Using C#Cc1cc(Cl)ccc1OCC(=O)OC(C)(C)C, CCCS(=O)(=O)c1cccc(Br)c1 to produce CCCS(=O)(=O)c1cccc(C#Cc2cc(Cl)ccc2OCC(=O)OC(C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.