1. Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
2. Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
3. Department of Cancer Biology, Wake Forest School of Medicine, Winston Salem, North Carolina 27157, United States
4. Departament de Química Física, Universitat de València, Burjassot 46100, Spain
5. Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Arcavacata di Rende 87036, Italy