1. Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute; Beutenbergstraße 11a 07745 Jena Germany
2. Institute of Pharmacy; Friedrich-Schiller-University Jena; Philosophenweg 14 07743 Jena Germany
3. Swiss Tropical and Public Health Institute, Parasite Chemotherapy; Socinstraße 57 4002 Basel Switzerland
4. University of Basel; Petersplatz 1 4003 Basel Switzerland
5. Institute for Analytical Chemistry; Friedrich-Schiller-University Jena; Lessingstr. 8 07743 Jena Germany
6. Centre for Social Evolution; University of Copenhagen; 2100 Copenhagen East Denmark