1. Department of Chemistry, University of California, Berkeley, California 94720, USA
2. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
3. The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
4. Theory Institute for Materials and Energy Spectroscopies, SLAC National Accelerator Laboratory, Menlo Park, California 94025,
USA
5. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
6. Department of Physics, University of California, Berkeley, California 94720, USA