1. Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, Ljubljana 1000, Slovenia
2. Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L 3N6, Canada
3. Department of Biomedical and Molecular Sciences, School of Medicine, Queen’s University, Botterell Hall, 18 Stuart Street, Kingston, Ontario K7L 3N6, Canada
4. Research & Development, Integrated Drug Discovery, Isotope Chemistry, Sanofi-Aventis Deutschland GmbH, Industriepark Höchst G876, Frankfurt/Main 65926, Germany