1. Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, United States
2. Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
3. Department of Chemistry Crystallography Facility, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
4. Molecular and Systems Pharmacology Program, Emory University, Atlanta, Georgia 30322, United States
5. Department of Dermatology, Emory University School of Medicine, Emory University, Atlanta, Georgia 30322, United States