1. State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P. R. China
2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China
3. School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
4. School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China