1. Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
2. Complex Carbohydrate Research Center, The University of Georgia, Athens, Georgia 30602, United States
3. Bijvoet Center for Biomolecular Research, Utrecht University, 3584 CG Utrecht, The Netherlands
4. Chemistry Department, The University of Georgia, Athens, Georgia 30602, United States