1. Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht 3584 CG, The Netherlands
2. Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
3. Virology Division, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht 3584 CL, The Netherlands
4. Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht 3584, The Netherlands
5. Chemistry Department, University of Georgia, Athens, Georgia 30602, United States