1. Institute of Organic Chemistry and Biochemistry; Academy of Science of the Czech Republic; v. v. i., Flemingovo nám. 2 CZ-166 10 Prague 6 Czech Republic
2. Department of Analytical Chemistry, Faculty of Science; Charles University in Prague; Hlavova 2030/8 CZ-128 43 Prague 2 Czech Republic
3. Max Planck Institute for Chemical Ecology; Hans-Knöll-Straße 8 D-07745 Jena Germany
4. Chair for Bioinformatics; Friedrich Schiller University Jena; Ernst-Abbe-Platz 2 07743 Jena Germany