1. Department of Physiology and Pharmacology, School of Pharmacy, University of the Pacific, Stockton, California, 95211, USA
2. Rees-Stealy Research Foundation Laboratory, 2001 Fourth Avenue, San Diego, CA, 92101, USA
3. Program for Collaborative Research in the Pharmaceutical Sciences, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois, 60612, USA
4. Shaman Pharmaceuticals Inc., 213 East Grand Avenue, South San Francisco, CA, 94080, USA
5. Department of Chemistry, Hong Kong University of Science and Technology, Hong Kong