1. Department of Chemistry; Simon Fraser University Burnaby; British Columbia V5A 1S6 Canada
2. Life Science Division; TRIUMF; Vancouver BC V6T 2A3 Canada
3. Department of Molecular Oncology; BC Cancer Agency; Vancouver British Columbia V5Z 1L3 Canada
4. Medicinal Chemistry; Roche Pharma Research and Early Development (pRED); Roche Innovation Center Basel; F. Hoffmann-La Roche Ltd; Grenzacherstrasse 124 CH-4070 Basel Switzerland