1. Leiden/Amsterdam Center for Drug Research (LACDR), Vrije Universiteit Amsterdam, Department of Medicinal Chemistry, De Boelelaan 1083, 1081 HV, Amsterdam, The Netherlands, Biomolecular Mass Spectrometry Unit, Leiden University Medical Center (LUMC), Department of Parasitology, P.O. Box 9600, 2300 RC, Leiden, The Netherlands, Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, Florida 32610-0485, and Department of Biophysical Organic Chemistry, LIC/LACDR, Gorlaeus...