1. Department of Chemistry, University of Marburg, Marburg, D-35043, Germany
2. Department of Pharmaceutical Chemistry, University of Belgrade, Belgrade, 11000, Serbia
3. Department of Chemistry and Physics, Monmouth University, West Long Branch, New Jersey 07764, United States
4. Center for Synthetic Microbiology (SYNMIKRO), University of Marburg, Marburg, D-35043, Germany