1. Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747 AG Groningen (the Netherlands
2. Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)—Helmholtz Centre for Infection Research (HZI) Campus Building E8.1 66123 Saarbrücken Germany
3. Saarland University Department of Pharmacy Campus Building E8.1 66123 Saarbrücken Germany
4. Institute of Virology Hannover Medical School 30625 Hannover Germany
5. Institute of Virology, Cluster of Excellence RESIST (EXC 2155) Hannover Medical School 30625 Hannover Germany
6. Institute for Chemistry University of Graz Heinrichstrasse 28/II 8010 Graz Austria