Using CCOC(=O)c1[nH]c2cc(Cl)cc(Cl)c2c1NS(=O)(=O)c1ccccc1 to produce O=C(O)c1[nH]c2cc(Cl)cc(Cl)c2c1NS(=O)(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.