1 School of BioSciences, University of Melbourne, Parkville, VIC, 3010, Australia.
2 Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P. O. Box 1068, Blindern, 0316, Oslo, Norway.
3 National Polytechnic High School, Marien Ngouabi University, BP 69, Brazzaville, Republic of Congo.
4 Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P. O. Box 1068, Blindern, 0316, Oslo, Norway. helle.wangensteen@farmasi.uio.no.