1. State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Beijing China
2. State Key Laboratory of Bioactive Substance and Function of Natural Medicines Department of New Drug Research and Development Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
3. Molecular Modeling and Drug Discovery Core for District of Columbia Center for AIDS Research (DC CFAR) Laboratory of Cheminformatics and Drug Design Department of Pharmaceutical Sciences College of Pharmacy Howard University Washington DC USA