1. Departamento de Química
Orgánica I, Facultad de Ciencias Químicas, Universidad
Complutense de Madrid, E-28040 Madrid, Spain
2. Oncology, Girona Institute for
Biomedical Research, E-17001 Girona, Spain, and School of Medicine,
University of Girona, E-17071 Girona, Spain
3. Biochemistry and Molecular Biology,
School of Pharmacy and Institute of Biomedicine of the University
of Barcelona (IBUB), 08028 Barcelona, Spain
4. Spanish National Cancer Research
Center (CNIO), Clinical Research Program, Melchor Fernández
Almagro, 3, E-28029 Madrid, Spain