Using O=C(O)[C@@H]1C[C@@H](O)CN1C(=O)c1ccccc1, Cc1ccc(S(=O)(=O)O)cc1 to produce COC(=O)[C@@H]1C[C@@H](O)CN1C(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.