1. Molecular
Biotechnology, Institute of Biology, Leiden University, Sylviusweg
72, 2333 BE Leiden, The Netherlands
2. Natural
Products Laboratory, Institute of Biology, Leiden University, Sylviusweg
72 2333 BE Leiden, The Netherlands
3. Research
Institute of Pharmaceutical Sciences, Musashino University, Shinmachi, Nishitokyo-shi, Tokyo 202-8585, Japan