1. Department of Medicinal Chemistry, Uppsala University, P.O. Box 547, 751 23 Uppsala, Sweden
2. Department of Chemistry─Ångström, P.O. Box 573, Uppsala University, 751 23 Uppsala, Sweden
3. ISIS Neutron and Muon Source, STFC, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, Oxon, United Kingdom