1. Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296 Gothenburg, Sweden
2. Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, 41296 Gothenburg, Sweden
3. Swedish NMR Centre, University of Gothenburg, Medicinaregatan 5C, 40530 Gothenburg, Sweden