1. Department of Biomolecular Chemistry, Faculty of Medicine; Medical University of Lodz; Mazowiecka 6/8 92-215 Lodz Poland
2. Laboratory of Chemical Biology, Institute of Biochemistry, Biological Research Centre; Hungarian Academy of Sciences; Temesvári krt. 62 H-6726 Szeged Hungary
3. Faculty of Chemistry; University of Wroclaw; F. Joliot-Curie 14 50-383 Wroclaw Poland