1. Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
2. Center of Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
3. Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
4. Department of Scientific Computing, Florida State University, Tallahassee, Florida 32306, United States
5. Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States