1. Department
of Chemistry and Biochemistry, Hunter College and the Graduate Center of the City University of New York, New York, New York 10021, United States
2. Department
of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
3. Program
in Molecular Pharmacology and Chemistry, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States