1. a Global Institute of COmputational Molecular and Materials Science (GIOCOMMS) , Toronto/Budapest/Beijing
2. b Department of Chemistry , Beijing Normal University , Beijing, China 100875
3. c School of Chemistry , University of Wales Bangor , Bangor, Gwynedd, LL57 2UW, UK
4. d Department of Chemistry and Chemical Informatics, Faculty of Education , University of Szeged , Boldogasszony sgt. 6, Szeged, Hungary, 6725