Using OC(c1ccccc1)(c1ccccc1)C(CCOC1CCCCO1)c1ccccc1 to produce OCCC(c1ccccc1)C(O)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.