1. Moscow Center for Continuous Mathematical Education; Moscow 119002 Russia
2. Moscow State University (Lomonosov); Moscow 119992 Russia
3. Department of Chemistry; University of Illinois at Urbana-Champaign; Urbana Illinois 61801
4. Institute of Inorganic Chemistry, RWTH Aachen University; Aachen D-52056 Germany
5. Institute of Physical and Theoretical Chemistry, Braunschweig Technical University; Braunschweig D-38023 Germany
6. Jülich-Aachen Research Alliance (JARA-HPC), RWTH Aachen University; Aachen 52056 Germany