1. Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
2. Molecular Design, GlaxoSmithKline, 1250 S. Collegeville Road, Collegeville, Pennsylvania 19426, United States
3. Chemical Development, GlaxoSmithKline, 1250 S. Collegeville Road, Collegeville, Pennsylvania 19426, United States