Using CCOC(=O)C(C)Oc1ccc(C(=O)c2ccc(OC)cc2)c(Cl)c1Cl to produce CC(Oc1ccc(C(=O)c2ccc(O)cc2)c(Cl)c1Cl)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.