Using CC(=O)c1cc(-c2cccc(Cl)c2)on1, CC(O)c1cc(-c2cccc(Cl)c2)on1 to produce COC(=O)c1cc(-c2cccc(Cl)c2)on1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.