1. Warren Center for Neuroscience Drug Discovery, Vanderbilt University, Franklin, Tennessee, USA.
2. Department of Pharmacology, Vanderbilt University, Nashville, Tennessee, USA.
3. Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA.
4. Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee, USA.
5. Department of Biochemistry, Vanderbilt University, Nashville, Tennessee, USA.
6. Department of Chemistry, Vanderbilt University, Nashville, Tennessee, USA.