1. Department
of Chemistry, Boston University, 590 Commonwealth Avenue, Room 290, Boston, Massachussetts 02215, United States
2. Department
of Chemistry and Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
3. Faculty of Pharmacy & Ontario Institute for Cancer Research, University of Toronto, Toronto, Canada
4. Department
of Biochemistry, Albert Einstein College of Medicine, 1300 Morris
Park Avenue, Bronx, New York, New York 10461, United States