1. V. Čermák Laboratory, J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, 18223 Prague 8, Czech Republic, Space Science Division, NASA Ames Research Center, Mail Stop 245-6, Moffett Field, California 94035, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic, Department of Organic Chemistry, Faculty of Sciences, Charles University in Prague, Hlavova 8, 12083 Prague...