1. Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute of Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
2. Chemical Crystallography, Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
3. Tres Cantos Medicines Development Campus, GlaxoSmithKline, Calle Severo Ochoa 2, Tres Cantos, Madrid, Spain