1. Division of Biomolecular Science and Medicinal Chemistry, School of Pharmacy, University of Nottingham Biodiscovery Institute, University Park, Nottingham NG7 2RD, U.K.
2. Centre of Membrane Proteins and Receptors, University of Birmingham and University of Nottingham, the Midlands, Nottingham NG7 2UH, U.K.
3. Division of Physiology, Pharmacology & Neuroscience, Medical School, School of Life Sciences, University of Nottingham, Nottingham NG7 2UH, U.K.
4. Amsterdam Institute for Molecules, Medicines and Systems, Division of Medicinal Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelean 1083, 1083 HV Amsterdam, The Netherlands