Using CC(=O)Nc1nc(S(=O)(=O)Nc2c(Cl)cccc2Cl)n[nH]1 to produce Nc1nc(S(=O)(=O)Nc2c(Cl)cccc2Cl)n[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.