1. PULSE Institute, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, USA
2. Centre for Molecular Movies, Department of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
3. Division of Chemical Physics, Department of Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden
4. Department of Physics, Beijing Normal University, Beijing 100875, China
5. LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
6. Department of Chemistry, Stanford University, Stanford, California 94305, USA
7. SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
8. Deutsches Elektronen-Synchrotron (DESY), Photon Science, Notkestraße 85, 22607 Hamburg, Germany
9. Max Planck Institute for Biophysical Chemistry, Am Faßberg 11, 37077 Göttingen, Germany
10. HPSTAR, 1690 Cailun Rd., Pudong, Shanghai 201203, China
11. Division of Theoretical Chemistry, Department of Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden
12. Center for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden