1 Department of Chemical Sciences, National Natural Science Foundation of China, Beijing, China.
2 Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
3 Department of Chemical Biology, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
4 Department of Interdisciplinary Sciences, National Natural Science Foundation of China, Beijing, China.
5 Department of Chemical Sciences, National Natural Science Foundation of China, Beijing, China. zhangyan@nsfc.gov.cn.