Using COC(=O)c1ccc(CCCN(CCCc2cccc(Cl)c2)S(=O)(=O)c2cccnc2)s1 to produce O=C(O)c1ccc(CCCN(CCCc2cccc(Cl)c2)S(=O)(=O)c2cccnc2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.