Sai-Fei Lei1, De-Hua Yang1,2, Ming-Wei Wang1,2,3. 1. The National Center for Drug Screening. 2. the CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China. 3. School of Pharmacy, Fudan University, Zhangjiang High-Tech Park, Shanghai 201203, China.