1. Institute of Organic Chemistry and Biochemistry of the CAS; Flemingovo nám. 2 166 10 Prague Czech Republic
2. Department of Organic Chemistry; Charles University in Prague; Hlavova 8 128 00 Prague Czech Republic
3. Institute of Chemistry; Technische Universität Berlin; Hardenbergstraße 40 10623 Berlin Germany
4. Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 12489 Berlin Germany
5. Department of Physical and Macromolecular Chemistry; Charles University in Prague; Hlavova 8 128 00 Prague Czech Republic