1. Centre for Forest Biology & Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia,Canada, V8P5C2
2. Department of Biochemistry, Max-Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, D-07745 Jena,Germany
3. Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20500 Turku,Finland