1. Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Karlsruhe 76131, Germany
2. COSMOS GbR, Jena 07743, Germany
3. Research Partner, Karlsruhe Institute of Technology (KIT), Karlsruhe 76131, Germany
4. Institute for Biological Interfaces 4—Magnetic Resonance, Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen 76021, Germany