1. Drug Design and
Synthesis Section, Molecular Targets and Medications Discovery Branch,
Intramural Research Program, National Institute on Drug Abuse and
the National Institute on Alcohol Abuse and Alcoholism, National Institutes
of Health, Department of Health and Human Services, 9800 Medical Center Drive, Bethesda, Maryland 20892-3373, United States
2. Department
of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado 80309, United States
3. Department
of Chemistry and Biochemistry the BioFrontiers Institute, University of Colorado at Boulder, Boulder, Colorado 80309, United States