1. Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
2. Department of Pharmaceutical Chemistry, College of Pharmacy, Misr University for Science and Technology, P.O. Box 77, 6th of October City 12568, Egypt
3. Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
4. Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, Alberta T6G 1Z2, Canada
5. Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta T6G 2H1, Canada