* Corresponding authors

^a Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, California 90089, USA
E-mail: clayw@usc.edu

^b Graduate Institute of Pharmaceutical Science, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan

^c Department of Chemistry, College of Letters, Arts and Sciences, University of Southern California, Los Angeles, California 90089, USA