Using CCOC(=O)C(Cl)Cl, Cc1cc(O)c(O)cc1S(=O)(=O)c1ccccc1 to produce Cc1cc2c(cc1S(=O)(=O)c1ccccc1)OC(C(=O)O)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.