1. Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
2. Department of Systems Biology, Building 221, Technical University of Denmark, DK-2800 Kgs. Lyngby,
Denmark
3. Life Sciences Institute and Departments of Medicinal Chemistry, Microbiology & Immunology, and Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
4. University of Colorado Cancer Center, Aurora, Colorado 80045, United States