1. Department of Chemistry, Furman University, 3300 Poinsett Highway, Greenville, South Carolina 29613, Cancer Research UK Drug−DNA Interactions Research Group, Department of Oncology, University College London, 91 Riding House Street, London, W1W 7BS, U.K., and Taiho Pharmaceutical Co., Ltd., 1-27, Misugidai Hanno-City, Saitama, 357-8527, Japan