1. Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry; Ruđer Bošković Institute; Bijenička cesta 54 10 000 Zagreb Croatia
2. Ministry of Defense of the Republic of Croatia; Dr. Franjo Tuđman Croatian Defense Academy; Ilica 256 b Zagreb Croatia
3. Laboratory for Mass Spectrometry, Division of Physical Chemistry; Ruđer Bošković Institute; Bijenička cesta 54 10 000 Zagreb Croatia