1. Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
2. Department of Pharmaceutical Sciences and Center for Biomolecular Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
3. Department of Biological Sciences, University of New Brunswick, Saint John, NB, Canada
4. Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin, Madison, WI, 53705, USA