1. Dipartimento di Farmacia-Scienze del Farmaco, Via Orabona, 4, 79125 Bari, Italy
2. Centro Singular Investigación Quimica Biologica e Materiales Moleculares (CIQUS), Departamento de Quimica Orgánica, Facultade de Farmacia, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
3. Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
4. Department of Oncology, University of Torino, via Santena 5/bis, 10126 Torino, Italy
5. Consiglio Nazionale delle Ricerche (CNR), Istituto di Cristallografia, Via Amendola, 70126 Bari, Italy