Using COS(=O)(=O)c1ccc(C)cc1, CC(O)(C(=O)c1ccccc1)c1ccccc1 to produce COC(C)(C(=O)c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.