1. Faculty of Engineering and Natural Sciences, Tampere University, FI-33101 Tampere, Finland
2. Otto-Diels-Institute of Organic Chemistry, Christian-Albrechts-University of Kiel, 24098 Kiel, Germany
3. Institute for Physical Chemistry, Department for Theoretical Chemistry, Christian-Albrechts-University of Kiel, 24098 Kiel, Germany
4. School of Chemical and Pharmaceutical Sciences, Technological University Dublin, City Campus, Grangegorman, Dublin 7, Ireland
5. Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Finland