diketopiperazine

例句：

1. 1. The compound has been shown to have anti-inflammatory properties.
   这种化合物已被证明具有抗炎性质。
2. 2. It is used in the treatment of ulcers and gastritis.
   它用于治疗溃疡和胃炎。
3. 3. Diketopiperazine is a synthetic drug that is used to treat malaria.
   Diketopiperazine是一种合成药物，用于治疗疟疾。