1. Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
2. Department of Chemistry and Biochemistry, The City College of New York, 1024 Marshak, 160 Convent Avenue, New York, New York 10031, United States
3. Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
4. Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
5. Pharmacology Program, Weill Cornell Medical College, New York, New York 10021, United States
6. Department of Radiology, Weill Cornell Medical College, New York, New York 10021, United States