1 Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece.
2 Department of Chemistry, University of São Paulo, 14040-901 Ribeirão Preto, Brazil.
3 Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, 0315 Oslo, Norway.
4 School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia.
5 Department of Chemistry and Biochemistry, University of California, 3234 Urey Hall, #0340, 9500 Gilman Drive, La Jolla, 92093-0340 San Diego, California, United States.