Using NC(CO)CO, O=[N+]([O-])c1cc(S(=O)(=O)Cl)sc1Cl to produce O=[N+]([O-])c1cc(S(=O)(=O)NC(CO)CO)sc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.