1. Center
for Organic and Medicinal Chemistry, Research Triangle Institute, P.O. Box 12194, Research Triangle Park, North Carolina 27709, United States
2. Department
of Molecular and Cellular Pharmacology, Miller School of Medicine, University of Miami, Miami, Florida 33101, United States
3. Department
of Pharmacology and Toxicology, Virginia Commonwealth University Medical Campus, P.O. Box 980615, Richmond, Virginia 23298, United States