1. Innovative Drug Research and Bioinformatics Group
2. College of Pharmaceutical Sciences
3. Zhejiang University
4. Hangzhou 310058
5. China
6. Bioinformatics and Drug Design Group
7. Department of Pharmacy
8. National University of Singapore
9. Singapore 117543
10. Singapore
11. State Key Laboratory of Applied Organic Chemistry and Department of Chemistry
12. Lanzhou University
13. Lanzhou 730000