1. Chengdu Easton Biopharmaceuticals Co., Ltd., Chengdu 611731, China
2. Sinopharm Chuankang Pharmaceutical Co., Ltd, Chengdu 611731, China
3. Sichuan Qingmu Pharmaceutical Co., Ltd, Meishan 620010, China
4. Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China