1. Institute
of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 166 10, Prague 6, Czech Republic
2. Institute
of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech Republic
3. Department
of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic