1. Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
2. Department of Organic and Nuclear Chemistry, Charles University in Prague, Hlavova 8, 12843 Prague 2, Czech Republic
3. Faculty of Chemistry, University of Warsaw, Pasteur 1, 02093 Warsaw, Poland
4. Institute of Chemical Technology Prague, Technická 5, 16628 Prague 6, Czech Republic
5. J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, 18223 Prague 8, Czech Republic