1. Department of Chemistry, Durham University, South Road, Durham DH1 3LE, United Kingdom
2. NYU Shanghai, 1555 Century Ave., Shanghai 200122, China
3. NYU-ECNU Center for Computational Chemistry at NYU Shanghai, 3663 Zhongshan Road North, Shanghai 200062, China
4. Department of Chemistry, New York University, New York, New York 10003, United States
5. Department of Chemistry and the PULSE Institute, Stanford University, Stanford, California 94305, United States
6. SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States