1. Research
Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
2. Bioactive
Botanical Research Laboratory, Department of Biomedical and Pharmaceutical
Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
3. School
of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, People’s Republic of China