1. Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140, United States
2. Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, Pennsylvania 19140, United States
3. Fox Chase
Chemical Diversity Center, Doylestown, Pennsylvania 18902, United States
4. Bio-Organic and Natural Products Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts 02478, United States