1. School of Pharmacy, Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, 192-0392, Japan
2. Structural Biology Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
3. Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
4. Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, Bonn 53121, Germany
5. School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
6. Pharmaceutical Institute, Pharmaceutical/Medicinal Chemistry, University of Tübingen, Tübingen 72076, Germany
7. Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, Koto, Tokyo 135-0064, Japan
8. Faculty of Medicine, Transborder Medical Research Center, University of Tsukuba, Tsukuba 305-8575, Japan
9. Department of Infectious Diseases and Host Defense, Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan