Using ClC(Cl)(Cl)C(Cl)(Cl)Cl, Cc1onc(C2CC2)c1CS(=O)(=O)C1=NOC(C)(C)C1 to produce Cc1onc(C2CC2)c1C(Cl)S(=O)(=O)C1=NOC(C)(C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.