1. Center
for Organic and Medicinal Chemistry, Research Triangle Institute, P.O. Box 12194, Research Triangle Park, North Carolina 27709, United States
2. National
Institute of Mental Health Psychoactive Drug Screening Program, Department
of Pharmacology and Division of Chemical Biology and Medicinal Chemistry, University of North Carolina Chapel Hill Medical School, 4072 Genetic Medicine Building, Chapel Hill, North Carolina 27599, United States