1. National Center for Advancing Translational Sciences, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, United States
2. Center for Integrative Chemical Biology and Drug Discovery, Division for Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, United States
3. Biological Testing Branch, Developmental Therapeutics Program, National Cancer Institute, Frederick, Maryland 21702, United States
4. Developmental Therapeutics Program Division of Cancer Treatment and Diagnosis, National Cancer Institute, Rockville, Maryland 20850, United States
5. NExT Program Support, Applied/Developmental Research Directorate, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, United States