1. SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
2. Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
3. Department of Chemistry and James Franck Institute, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
4. Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
5. International Center for Quantum Materials, Peking University, 5 Yiheyuan Road, Haidian, Beijing 100871, China
6. Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States,
7. Department of Chemistry, University of Paderborn, Warburger Strasse 100, D-33098 Paderborn, Germany
8. European Lab for Nonlinear Spectroscopy and Dipartimento di Fisica e Astronomia, Università di Firenze, Via Nello Carrara 1, Sesto Fiorentino (Firenze) I-50019, Italy
9. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany