Using CCC(=O)Oc1c(OC)cc(C)c(C(=O)c2c(OC)ccc(Cl)c2C)c1OC to produce COc1cc(C)c(C(=O)c2c(OC)ccc(Cl)c2C)c(OC)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.