1. Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
2. The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
3. Department of Bioengineering, University of Washington, Seattle, Washington 98125, United States
4. Division of Chemical Biology and Medicinal Chemistry UNC Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
5. Department of Pharmacology, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States