mitragynine

例句：

1. 1. Thedrug mitragynine is usedto treat malaria.
   金鸡纳碱用于治疗疟疾。
2. 2. Thepatient was given mitragynine for the pain.
   病人被给予金鸡纳碱以缓解疼痛。
3. 3. The research team discovered anew compound that could be used as analternative to mitragynine.
   研究团队发现了一种新的化合物，可以作为金鸡纳碱的替代品。