1. Mass Spectrometry Research Center, Vanderbilt University, 465 21st Ave S #9160, Nashville, Tennessee 37235, United States
2. Department of Biochemistry, Vanderbilt University, 607 Light Hall, Nashville, Tennessee 37205, United States
3. Department of Chemistry, Vanderbilt University, 7330 Stevenson Center, Station B 351822, Nashville, Tennessee 37235, United States
4. Department of Pharmacology, Vanderbilt University, 442 Robinson Research Building, 2220 Pierce Avenue, Nashville, Tennessee 37232, United States
5. Department of Medicine, Vanderbilt University, 465 21st Ave S #9160, Nashville, Tennessee 37235, United States