Using O=S(=O)(Cl)c1ccccc1I, COc1nc(Cl)cnc1NC(=O)OCC(C)C to produce COc1nc(Cl)cnc1N(C(=O)OCC(C)C)S(=O)(=O)c1ccccc1I, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.