Using COC(=O)CC(=O)CC(O)(CCc1ccc(O)cc1)C1CCCCC1 to produce O=C1C=C(O)CC(CCc2ccc(O)cc2)(C2CCCCC2)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.