Using CS(=O)(=O)n1c(N)nc2ccccc21, O=S(=O)(O)Cl to produce CS(=O)(=O)n1c(N)nc2cc(S(=O)(=O)Cl)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.