1. Department of Chemistry and Center for Theoretical and
Computational Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
2. Department of Chemistry, Portland State University, Portland, Oregon 97207-0751, United States
3. Departments of Biochemistry and Biophysics
and Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
4. Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, N-7491 Trondheim, Norway