Using CCCCCCCCc1ccc(OCC(Cn2ccc(C(=O)OC(C)(C)C)c2)OC(C)=O)cc1 to produce CCCCCCCCc1ccc(OCC(O)Cn2ccc(C(=O)OC(C)(C)C)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.