Using O=S(=O)(Cl)c1cccc(Cl)c1Cl, COC(=O)c1nccnc1N to produce COC(=O)c1nccnc1NS(=O)(=O)c1cccc(Cl)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.