Using OCc1ccccc1, CC(C)(CCCC(C)(C)C(=O)O)C(=O)O to produce CC(C)(CCCC(C)(C)C(=O)OCc1ccccc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.