1. Division
of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
2. National
Glycoengineering Research Center, Shandong University, Jinan 250100, China
3. Complex
Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602, United States
4. School
of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, United Kingdom
5. Department
of Pathology and Laboratory Medicine, School of Medicine, University of North Carolina, Chapel Hill, North Carolina 27599, United States