Using CC(=O)OCC(C)(C)C(=O)N(C1CCC(=O)CC1)[C@H]1CCN(C(=O)OCc2ccccc2)C1 to produce CC(=O)OCC(C)(C)C(=O)N(C1CCC(O)CC1)[C@H]1CCN(C(=O)OCc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.