1. Department of Medicinal Chemistry and Institute for Therapeutics Discovery and Development, College of Pharmacy, University of Minnesota, 717 Delaware Street, Minneapolis, Minnesota 55414, United States
2. Moffitt Cancer Center, Drug Discovery Department, 12902 Magnolia Drive, Tampa, Florida 33612, United States
3. Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States