1. Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
2. Institut für Medizinische Mikrobiologie, Universität Zürich, 28 Gloriastrasse, 8006 Zürich, Switzerland
3. Department of Biological Sciences, University of Illinois at Chicago, 900 South Ashland Avenue, Chicago, Illinois 60607, United States
4. Kresge Hearing Research Institute, Department of Otolaryngology, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, United States
5. Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 900 South Ashland Avenue, Chicago, Illinois 60607, United States
6. Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland