Using COCOc1ccc(-c2c(CC=O)c3ccc(OCOC)cc3oc2=O)c(OCOC)c1 to produce COCOc1ccc(-c2c(CCO)c3ccc(OCOC)cc3oc2=O)c(OCOC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.