Using O=C([O-])c1ccccc1, COC(=O)[C@@H]1C[C@@H](OS(C)(=O)=O)CN1C(=O)OC(C)(C)C to produce COC(=O)[C@@H]1C[C@H](OC(=O)c2ccccc2)CN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.