1. Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
2. Gedeon Richter Plc, P.O. Box 27, H-1475 Budapest, Hungary
3. Centre for Structural Science, Research Centre for Natural Sciences, Magyar tudósok körútja 2., H-1117 Budapest, Hungary