Using COC(=O)c1cc(OC)c(C)c(OC)c1Oc1c(C=O)c(OC)cc(C)c1C(=O)O to produce COC(=O)c1cc(O)c(C)c(O)c1Oc1c(C=O)c(O)cc(C)c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.