1. Krka, d.d., Novo mesto, Šmarješka cesta 6, SI-8501 Novo mesto, Slovenia
2. University of Ljubljana, Faculty of Pharmacy, Aškerc̆eva 7, SI-1000 Ljubljana, Slovenia
3. Slovenian NMR Center, National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia
4. Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerc̆eva 5, SI-1000 Ljubljana, Slovenia