1. Department of Microbial Natural Products Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS) Helmholtz Centre for Infection Research (HZI) and Department of Pharmacy Saarland University, Campus E8 1 66123 Saarbrücken Germany
2. German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig Germany
3. Helmholtz International Lab for Anti-Infectives, Campus E8 1 66123 Saarbrücken Germany