1. Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
2. AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, Tulln, Austria
3. Department of Chemistry, Division of Chemistry of Renewables, University of Natural Resources and Life Sciences (BOKU), Tulln, Austria
4. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
5. Department of Physical Chemistry, University of Vienna, Vienna, Austria
6. Department of Organic Chemistry, University of Vienna, Vienna, Austria