1. SwissFEL, Paul-Scherrer Institute, 5232 Villigen PSI, Switzerland
2. Laboratory for Catalysis and Sustainable Chemistry, Paul-Scherrer Institute, 5232 Villigen PSI, and Department of Chemistry, ETH-Zürich, 8093 Zürich, Switzerland
3. Laboratoire de Spectroscopie Ultrarapide (LSU) and Lausanne Centre for Ultrafast Science (LACUS), Ecole Polytechnique Fédérale de Lausanne (EPFL), ISIC-FSB, Station 6, 1015 Lausanne, Switzerland
4. Institute of Applied Physics, University of Bern, Bern, Switzerland
5. Institute for Quantum Electronics, Eidgenössische Technische Hochschule (ETH) Zürich, 8093 Zurich, Switzerland
6. Division of Biology and Chemistry, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
7. Department of Biology, ETH Zurich, 8093 Zürich, Switzerland
8. Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland