1. Key Laboratory of Structure-Based Drug Design & Discovery of the Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
2. State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P. R. China
3. Gongan County People's Hospital, Jingzhou 434399, P. R. China