1. Institute of Pharmacy, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
2. Department of Pharmaceutical Chemistry, University of Marburg, Marbacher Weg 8, 35032 Marburg, Germany
3. Department of Medicinal Chemistry, Institute for Therapeutics Discovery and Development, University of Minnesota, Minneapolis, Minnesota 55414, United States