1. Faculty of Medicine, Department of Pharmacy, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia, Faculty of Sciences, Deprtment of Chemistry, University of Novi Sad, Trg D. Obradovica 3, Novi Sad, Serbia, and Faculty of Medicine, Department of Pharmacology and Toxicology, University of Novi Sad, Hajduk Veljkova 3, Novi Sad, Serbia