Using CC(O)c1c(Cl)nc(Cl)nc1Nc1ccccc1S(=O)(=O)C(C)C to produce CC(=O)c1c(Cl)nc(Cl)nc1Nc1ccccc1S(=O)(=O)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.