Using COC(=O)CCCCCCC1C(/C=C/C(=O)CC2CCCCC2)CCC1OC1CCCCO1 to produce COC(=O)CCCCCCC1C(/C=C/C(O)CC2CCCCC2)CCC1OC1CCCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.