1. Chemistry Department; Taras Shevchenko National University of Kyiv; 01033 Kyiv Ukraine
2. Univ. Bordeaux; Institut of Molecular Sciences, CNRS UMR 5255, F-; 33405 Talence France
3. Neurocentre Magendie; Univ. Bordeaux, INSERM U1215, F-; 33000 Bordeaux France