1. Complex
Carbohydrate Research Center, University of Georgia, 315 Riverbend
Road, Athens, Georgia 30602, United States
2. Department
of Chemistry, University of Georgia, Athens, Georgia 30602, United States
3. Department
of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical
Sciences, and Bijvoet Center for Biomolecular Research, University of Utrecht, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands