Using CCOC(=O)/C=C/c1cc(OC)c(OCOC)c2c(CC)cccc12 to produce CCOC(=O)/C=C/c1cc(OC)c(O)c2c(CC)cccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.