1. State Key Laboratory of Natural and Biomimetic Drugs, Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
2. School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
3. Key Laboratory of Chemical Biology of Ministry of Education, Department of Natural Product Chemistry, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
4. Department of Toxicology, School of Public Health, Peking University, Beijing 100191, China