1. Dipartimento di Scienze Farmaceutiche, Università di Ferrara, 44100 Ferrara, Italy, Departamento de Quimica Organica y Farmaceutica, Facultad de Farmacia, Campus de Cartuja s/n, 18071 Granada, and Cancer Research UK Drug−DNA Interactions Research Group, Department of Oncology, Royal Free and University College Medical School, UCL, 91 Riding House Street, London WIW 7BS, U.K.