1. Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse—Intramural Research Program, National Institutes of Health, 333 Cassell Drive, Baltimore, Maryland 21224, United States
2. School of Pharmacy, Medicinal Chemistry Unit, University of Camerino, Via S. Agostino 1, Camerino 62032, Italy
3. Department of Chemistry & Biochemistry, Department of Molecular & Cellular Biosciences, Rowan University, 201 Mullica Hill Rd, Glassboro, New Jersey 08028, United States
4. Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, Milano 20133, Italy