1. Institute of Organic ChemistryKarlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Germany
2. Department of ChemistryUniversity of Helsinki P.O. Box 55 (A. I. Virtasen aukio 1) 00014 University of Helsinki Finland
3. Institute of Biological and Chemical Systems – IBCS-FMSKarlsruhe Institute of Technology (KIT) Herman-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany