Using O=S(=O)(Cl)c1ccc(Cl)s1, CC(C)(C)OC(=O)NCCn1c(=O)[nH]c2ccccc21 to produce NCCn1c(=O)n(S(=O)(=O)c2ccc(Cl)s2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.