1. Chemistry Department, College of Natural and Applied Sciences, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania
2. Department of Chemistry − BMC, Uppsala University, SE-751 23 Uppsala, Sweden
3. Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
4. Department of Chemistry and Molecular Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden
5. Centre for Antibiotic Resistance Research (CARe) at the University of Gothenburg, 405 30 Gothenburg, Sweden