1. Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
2. Center for Integrative Chemical Biology and Drug Discovery, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
3. Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, North Carolina 27599, United States
4. Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina 27599, United States
5. Department of Chemistry, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
6. JST, PRESTO, Tokyo 113-0033, Japan
7. JST, CREST, Tokyo 113-0033, Japan