1. School of Pharmaceutical Sciences, Beijing Advanced Innovation Center for Structural Biology, and Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, P. R. China
2. Bayer Healthcare Co. Ltd., Beijing, 100020, P. R. China
3. Research & Development, Pharmaceuticals, Bayer AG, Wuppertal, 42096, Germany