1. Chemical and Biological Sciences Division, Ames National Laboratory 1 , Ames, Iowa 50011, USA
2. Institute for Protein Research, Osaka University 2 , Suita, Osaka 565-0871, Japan
3. Center for Quantum Information and Quantum Biology, Osaka University 3 , Toyonaka, Osaka 560-0043, Japan
4. National High Magnetic Field Laboratory, Florida State University 4 , Tallahassee, Florida 32310, USA
5. Department of Chemistry, University of Cyprus 5 , P.O. Box 20537, 1678 Nicosia, Cyprus
6. Department of Natural Sciences, University of Michigan-Dearborn 6 , Dearborn, Michigan 48128, USA