1. Laboratory of Molecular Modeling, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland
2. Baker Laboratory of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, USA
3. Department of Mathematical Sciences, DePaul University, 2320 N. Kenmore Ave., Chicago, Illinois 60614-3210, USA
4. Academic Learning Center, Argosy University, 225 N. Michigan Ave. #1300, Chicago, Illinois 60601, USA