1. Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, United States
2. Department of Chemistry, University of California, Berkeley, California 94720, United States
3. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. Department of Bioengineering, University of California, Berkeley, California 94720, United States
5. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States