1. Department of Medicinal Chemistry and Molecular Pharmacology and Center for Drug Discovery, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA.
2. Department of Integrative Biology and Pharmacology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA.
3. Department of Chemistry and Centers for Cancer Research and Drug Discovery, College of Science, Purdue University, 720 Clinic Drive, West Lafayette, IN 47907, USA.