Using CS, CC(OS(C)(=O)=O)C(O)(Cn1ccnn1)c1ccc(Cl)cc1Cl to produce CSC(C)C(O)(Cn1ccnn1)c1ccc(Cl)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.