1. Institute
of Chemistry, University of Tartu, 14a Ravila Street, Tartu 50411, Estonia
2. Faculty
of Pharmacy, Department of Analytical Chemistry, Charles University, Akademika Heyrovského 1203, Hradec
Králové 50005, Czech Republic
3. Pfizer Worldwide R&D, Eastern Point Road, Groton, Connecticut 06340, United States