1. Institute of Organic Chemistry with Centre of Phytochemistry
2. Bulgarian Academy of Sciences
3. BG-1113 Sofia
4. Bulgaria
5. Faculty of Pharmacy
6. Department of Science
7. Systems and Models
8. Roskilde University
9. DK-4000 Roskilde
10. Denmark
11. Medical University of Sofia
12. BG-1000 Sofia
13. Tokyo Institute of Technology
14. Department of Organic and Polymeric Materials
15. Tokyo 152-8552
16. Japan