Using O=C(O)c1[nH]c2ccc(Cl)cc2c1S(=O)(=O)c1ccccc1, NCCc1c[nH]cn1 to produce O=C(NCCc1c[nH]cn1)c1[nH]c2ccc(Cl)cc2c1S(=O)(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.