Using COC(=O)CCCCCCCCCCCCc1ccc(C(=O)OC(C)(C)C)s1 to produce CC(C)(C)OC(=O)c1ccc(CCCCCCCCCCCCC(=O)O)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.