1. Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, United States
2. Division
of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland
3. Photon
Sciences, Brookhaven National Laboratory, Upton, New York 11973, United States