Using CCOC(=O)C(C)(Cc1ccc(OCCOC2CCCCO2)cc1)Oc1ccccc1 to produce CCOC(=O)C(C)(Cc1ccc(OCCO)cc1)Oc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.