1. Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
2. Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
3. Ken & Ruth Davee Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
4. The Lou and Jean Malnati Brain Tumor Institute, The Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611, United States
5. Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, United States
6. Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States