1. Chinese Academy of Sciences Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Shanghai 201203, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. School of Pharmaceutical Science, Shanxi Medical University, 56 Xinjian South Road, Taiyuan 030001, China
4. State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China