Using COC(=O)C=C(C)C=C(C)CC(C)CCCCC1OC(=O)C1CO to produce COC(=O)C=C(C)CC(C)CC(C)CCCCC1OC(=O)C1CO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.