1. Sunesis Pharmaceuticals, Incorporated, 341 Oyster Point Boulevard, South San Francisco, CA 94080, USA.
2. Kravis Children's Hospital, Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1198, New York, NY 10029, USA.
3. Department of Drug Discovery, BiogenIdec, 14 Cambridge Center, Cambridge, MA 02142, USA.
4. Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139–4307, USA.
5. Chemistry and Chemical Biology Program, University of California, San Francisco, 600 16th Street, Box 2280, San Francisco, CA 94143, USA.