1. The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo
nám. 2, 166 10 Prague 6, Czech Republic
2. Department
of Analytical Chemistry, Faculty of Science, Charles University in Prague, 128 43 Prague 2, Czech Republic
3. Division
of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland