1. Laboratory of Organic Chemistry, Wageningen University & Research, Stippeneng 4, Wageningen 6807 WE, The Netherlands
2. Department of Chemistry, University College London, 20 Gordon St, London WC1H 0AJ, U.K.
3. Patrick G Johnston Centre for Cancer Research, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, U.K.
4. Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg 67000, France
5. Infrastructure Nationale de Protéomique ProFI − FR2048, Strasbourg 67087, France
6. Synaffix BV − A Lonza Company, Kloosterstraat 9, Oss 5349 AB, The Netherlands