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