1. Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics, Shands Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida, Gainesville, Florida 32611-7200, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People’s Republic of China, and Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285