1. State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences. Beijing 100050, China
2. Institute of Artificial Intelligence Research, Qihoo of Beijing Science and Technology Co. Ltd., Beijing 100015, China
3. The Pharmacy Informatics Branch of China International Exchange and Promotive Association for Medical and Health Care, Beijing 100005, China
4. Department of Automation, Tsinghua University, Beijing 100084, China