1. Department of Analytical Chemistry and Department of Physics and Measurement, Institute of Chemical Technology, Technická 5, 166 28 Praha 6, Czech Republic; Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic; and Department of Organic Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic