1. Department of Chemistry, University of Paderborn, Paderborn, Germany
2. Faculty of Science, University of Kragujevac, Kragujevac, Serbia
3. Department of Microbiology and Immunology, Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
4. Institute for Information Technologies, University of Kragujevac, Kragujevac, Serbia
5. Institute of Organic Chemistry, Clausthal University of Technology, Clausthal-Zellerfeld, Germany