1. Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, OX1 3QU, Oxford, UK
2. Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, OX3 7FZ, Oxford, UK
3. Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, OX1 3TA, Oxford, UK