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