1. School of Pharmacy, Institute of Clinical Sciences, University of Birmingham, Edgbaston B15 2TT, UK
2. Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
3. Institute of Chemistry, Department of Analytical Chemistry, Universidade Estadual de Campinas, Campinas 13083-970, Brazil
4. School of Medicine, University of St. Andrews, St Andrews KY16 9TF, UK