Using COC(OC)(c1ccc(Cl)cc1)c1ccc(Cl)cc1, COC(=O)Cc1ccc(O)c(O)c1 to produce COC(=O)Cc1ccc2c(c1)OC(c1ccc(Cl)cc1)(c1ccc(Cl)cc1)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.