Using Oc1ccc(C(O)(c2ccccc2)C(CCOCc2ccccc2)c2ccccc2)cc1 to produce OCCC(c1ccccc1)C(O)(c1ccccc1)c1ccc(O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.