1. Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109, United States
2. Department of Biological Sciences, Lehigh University, Bethlehem, Pennsylvania 18015, United States
3. Department of Bioengineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
4. Department of Chemistry, Lehigh University, Bethlehem, Pennsylvania 18015, United States