1. Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702 United States
2. Leidos Biomedical, FNLCR, Frederick, Maryland 21702 United States
3. Department of Chemistry, Stony Brook University, Stony Brook, New York 11790 United States
4. School of Medicine, University of Leeds, Leeds, LS2 9JT U.K.
5. Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892 United States