1. Department
of Chemistry, University of Florida, Gainesville, Florida 32611, United States
2. Department
of Microbial Pathogenesis, Yale School of Medicine, New Haven, Connecticut 06536, United States
3. Chemical
Biology Institute, Yale University, West Haven, Connecticut 06516, United States
4. Department
of Chemistry, Yale University, New Haven, Connecticut 06520, United States
5. Department
of Pharmacology, Yale School of Medicine, New Haven, Connecticut 06520, United States