Using CC(C)(C)OC(=O)c1ccc(C2CCCC(=O)C2)c(Cl)c1 to produce CC(C)(C)OC(=O)c1ccc(C2CCCC(O)C2)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.