1. College of Pharmacy, State Key Laboratory of Medicinal Chemical Biology, State Key Laboratory of Elemento-Organic Chemistry and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300071, China
2. State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
3. Xuzhou College of Industrial Technology, Xuzhou, 221000, China
4. Beijing Union Pharmaceutical Factory, Beijing, 100050, China