Using CCCCCCCCCCOc1ccc(OC(=O)C2CCc3cc(OCc4ccccc4)ccc3C2)cc1 to produce CCCCCCCCCCOc1ccc(OC(=O)C2CCc3cc(O)ccc3C2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.