1. Chemistry Teaching Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3PS, United Kingdom
2. Sherrington Building, Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Road, Oxford OX1 3PT, United Kingdom
3. Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom