1. School of Pharmacy, Chengdu Medical College; No.683, Xindu Avenue, Xindu District, Chengdu, Sichuan 610500, P. R. China
2. Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China; Chengdu, Sichuan 610500, P. R. China
3. Sichuan Province College Key Laboratory of Structure-Specific Small Molecule Drugs, Chengdu Medical College, No. 783, Xindu Avenue, Xindu District, Chengdu, Sichuan 610500, P. R. China