1. Department of Chemistry, University of Illinois Chicago, 845 W Taylor St., Chicago, Illinois 60607, United States
2. Skaggs Doctoral Program in the Chemical and Biological Sciences, Scripps Research, 10550 N Torrey Pines Rd, La Jolla, California 92037, United States
3. Department of Pharmaceutical Sciences, University of Illinois Chicago, 833 S Wood St., Chicago, Illinois 60612, United States
4. Department of Biochemistry and Molecular Genetics, University of Illinois Chicago, 900 S Ashland Ave., Chicago, Illinois 60607, United States