1. Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
2. Radiochemistry, Bristol-Myers Squibb Company, P.O. Box 4000, Princeton, New Jersey 08543, United States
3. Automated Synthesis Facility, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States