Using CI, CS(=O)(=O)NCc1ccc2[nH]cc(CCN3C(=O)c4ccccc4C3=O)c2c1 to produce CN(Cc1ccc2[nH]cc(CCN3C(=O)c4ccccc4C3=O)c2c1)S(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.