1. Department of Chemistry and Research Institute of Chemistry N.I. Lobachevsky State University of Nizhny Novgorod Nizhny Novgorod Russia
2. Bremen Center for Computational Material Studies University of Bremen Bremen Germany
3. Mass Spectrometry Data Center National Institute of Standards and Technologies Gaithersburg Maryland USA
4. A. A. Kharkevich Institute for Information Transmission Problems Russian Academy of Sciences Moscow Russia