1. State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin, 541004, China
2. College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, People's Republic of China
3. College of Pharmacy, Guilin Medical University, Guilin 541199, China