1. Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
2. Warren Center for Neuroscience Drug Discovery, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
3. Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
4. Vanderbilt Kennedy Center, Vanderbilt University, Nashville, Tennessee 37232, United States