1. Departement Chemie und Angewandte Biowissenschaften, ETH Zürich, 8093 Zürich, Switzerland
2. Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117, United States
3. NRC postdoc at Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico 87117, United States
4. Leibniz Institute for Natural Product Research and Infection Biology − Hans Knöll Institute, Adolf-Reichwein-Straße 23, 07745 Jena, Germany