1. Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
2. The Ministry-Province Jointly Constructed Base for State Key Lab,
Shenzhen Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, P. R. China
3. Cranbrook Kingswood Upper School, Bloomfield Hills, Michigan 48304, United States
4. Department
of Pharmacology and Pharmaceutical Sciences, School of Medicine, Tsinghua University, Beijing 100084, P. R. China