Using CC(=O)O, CCCCCC(CCC1C(C#N)CC(OC2CCCCO2)C1OC1CCCCO1)OC1CCCCO1 to produce CCCCCC(CCC1C(C=O)CC(OC2CCCCO2)C1OC1CCCCO1)OC1CCCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.