Using COC(=O)c1ccc(-c2ccc(O)cc2)s1, CC(=O)OC(C)=O to produce COC(=O)c1ccc(-c2ccc(OC(C)=O)cc2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.