1. Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
2. Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
3. Department of Pharmacology, Vanderbilt University, Nashville, Tennessee 37232, United States
4. Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
5. Warren Center for Neuroscience Drug Discovery, Vanderbilt University, Nashville, Tennessee 37232, United States