1. iMed.UL, CECF, Faculdade de Farmácia, Universidade de Lisboa, Av. Forças Armadas, 1600-083 Lisboa, Portugal, Department of Chemical & Biological Sciences, University of Huddersfield, Huddersfield, HD1 3DH, U.K., and Department of Chemistry, The Open University, Milton Keynes, MK7 6AA, U.K.