Using C[C@H](NC(=O)OCc1ccccc1)C(=O)C1(C(=O)OC(C)(C)C)CC1 to produce C[C@H](NC(=O)OCc1ccccc1)C(O)C1(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.