1. Departments of Biochemistry,
Chemistry, and Pharmacology, Vanderbilt Institute of Chemical Biology,
Center in Molecular Toxicology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville,
Tennessee 37232-0146, United States
2. Department of Pharmacology and
Center of Excellence in Environmental Toxicology, Perelman School
of Medicine, University of Pennsylvania, 1315 BRB II/III, 420 Curie Boulevard, Philadelphia, Pennsylvania
19104-6061, United States
3. Department of Chemistry, University of Pennsylvania, 231 South 34th Street,
Philadelphia, Pennsylvania 19104-6323, United States