1. Computational Chemistry and Molecular Biophysics Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse─Intramural Research Program, National Institutes of Health, Baltimore, Maryland 21224, United States
2. Division of Molecular Therapeutics, New York State Psychiatric Institute, New York, New York 10032, United States
3. Department of Molecular Pharmacology and Therapeutics, Vagelos College of Physicians and Surgeons, Columbia University, New York, New York 10032, United States
4. Department of Psychiatry, Vagelos College of Physicians and Surgeons, Columbia University, New York, New York 10032, United States