Using COC(=O)C(Oc1ccc(C(C)(C)C)cc1)c1ccc(OCC(C)Oc2ccc(Cl)cc2)cc1 to produce CC(COc1ccc(C(Oc2ccc(C(C)(C)C)cc2)C(=O)O)cc1)Oc1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.