1. Department of Pharmaceutical Chemistry, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, New Jersey 08854, The Cancer Institute of New Jersey, New Brunswick, New Jersey 08901, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K., and Morvus Technology Ltd., Porton Down Science Park, Salisbury, Wiltshire SP4 0JQ, U.K.