a
Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, School of Pharmacy, 1985 Zonal Avenue, Los Angeles, USA
E-mail: clayw@usc.edu
b
Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Ave., Lawrence, USA
c
Department of Chemistry, University of Southern California, College of Letters, Arts, and Sciences, Los Angeles, USA