1. Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, United States
2. Department of Biomedical and Pharmaceutical Sciences, Idaho State University, Pocatello, Idaho 83209, United States
3. Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
4. Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24060, United States
5. Department of Biochemistry, Virginia Tech, Blacksburg, Virginia 24060, United States