1. Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, 575 W Stadium Avenue, West Lafayette, Indiana 47904, United States
2. Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
3. Purdue Center for Cancer Research, and Purdue Institute for Drug Discovery, West Lafayette, Indiana 47907, United States