1. Center for Radiopharmaceutical Sciences ETH, PSI and USZ, Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland
2. Department of Nuclear Medicine, University Hospital Zurich, CH-8091 Zurich, Switzerland
3. Laboratory for Catalysis and Sustainable Chemistry, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
4. X-ray Structure Analysis Centre, Faculty of Chemistry, University of Vienna, A-1090 Vienna, Austria