1. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94551
2. SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025 USA
3. Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
4. Center for Materials Research (ZfM), Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
5. Institute for Organic and Biomolecular Chemistry, Georg-August-University, Tammannstr. 2, 37077 Göttingen, Germany