1. Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94158-2330, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20892-3370, Mass Spectroscopy Facility, Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94143-0446, and Dipartimento di Scienze Farmaceutiche, Università degli Studi di Modena e Reggio Emilia, Via Campi 183,...