1. Max Planck Institute of Molecular Physiology, Otto-Hahn-Str. 11, 44227 Dortmund, Germany
2. Technical University Dortmund, Department of Chemistry
and Chemical Biology, Otto-Hahn-Str. 6, 44227 Dortmund, Germany
3. Chemical Genomics Centre of the Max Planck Society, Otto-Hahn-Str. 15, 44227 Dortmund, Germany