1. Department of Chemistry The University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐0033 Japan
2. Center for Integrative Medicine and Physics Institute for Advanced Study Kyoto University Kyoto 606–8501 Japan
3. European Synchrotron Radiation Facility Grenoble 38043 France
4. Physical Chemistry of Biosystems Institute of Physical Chemistry Heidelberg University Heidelberg 69120 Germany