1. Department of Chemistry, Stanford University, Stanford, California 94305, United States
2. Linac Coherent Light Source, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, United States
3. Department
of Chemistry — Ångström, Uppsala University, SE-751
20 Uppsala, Sweden
4. Stanford
Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, United States
5. Advanced
Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States