Using CS(=O)(=O)CCOC(=O)Cl, N[C@@H]1C(=O)N2C(C(=O)O)=C(CO)CS[C@H]12 to produce CS(=O)(=O)CCOC(=O)N[C@@H]1C(=O)N2C(C(=O)[O-])=C(CO)CS[C@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.