1. Department of Chemistry, University of California, Irvine, CA, USA
2. Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
3. School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
4. The Biodesign Center for Molecular Design and Biomimetics, Arizona State University, Tempe, AZ, USA
5. Department of Molecular Biology & Biochemistry, University of California, Irvine, CA, USA
6. Department of Pharmaceutical Sciences, University of California, Irvine, CA, USA