1. Department
of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
2. Institute of Molecular Cancer Research, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
3. Monash
Institute of Pharmaceutical Sciences, Monash University, 381 Royal
Parade, Parkville, Victoria 3052, Australia