1. School of Pharmacy, University of Wisconsin─Madison, Madison, Wisconsin 53705, United States
2. Department of Chemistry, University of Wisconsin─Madison, Madison, Wisconsin 53706, United States
3. Department of Surgery, School of Medicine and Public Health, University of Wisconsin─Madison, Madison, Wisconsin 53792, United States
4. School of Pharmaceutical Sciences, China Pharmaceutical University, Nanjing, 210009, China
5. Medicinal Chemistry Center, School of Pharmacy, University of Wisconsin─Madison, Madison, Wisconsin 53705, United States