1. Department of Resources Science of Traditional Chinese Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
2. Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing 210046, P. R. China
3. Department of Chemistry, College of Liberal Arts and Sciences, University of Illinois Chicago, Chicago, IL, USA
4. The Center for Chemical Biology, Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P. R. China
5. School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, P. R. China
6. Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, Nanjing 211198, P. R. China