1. Kenneth S. Pitzer Center for Theoretical Chemistry, University of California, Berkeley, California 94720, United States
2. Department of Chemistry, University of California, Berkeley, California 94720, United States
3. Department of Chemistry, Beijing Normal University, Beijing 100875, China
4. Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
5. Molecular Medicine Program, Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
6. Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada
7. Center for Molecular Modeling (CMM), Ghent University, 9052 Zwijnaarde, Belgium
8. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
9. Department of Bioengineering, University of California, Berkeley, California 94720, United States