1. Department
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
2. Department
of Biochemistry, University of Wisconsin—Madison, 433 Babcock Drive, Madison, Wisconsin 53706, United States
3. Departamento
de Química Orgánica, Laboratorio de Investigación
Ignacio Ribas, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain