Using COc1ccc(S(=O)(=O)N(C)c2ccc(Cl)cc2C(=O)c2ccccc2Cl)cc1OC to produce COc1ccc(S(=O)(=O)N(C)c2ccc(Cl)cc2C(O)c2ccccc2Cl)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.