1. University of Chemical Technology and Metallurgy
2. Department of General and Inorganic Chemistry
3. 1756 Sofia
4. Bulgaria
5. University of Grenoble Alpes
6. Institute of Organic Chemistry with Centre of Phytochemistry
7. Bulgarian Academy of Sciences
8. Sofia
9. LEPMI
10. 38000 Grenoble
11. France
12. CNRS