1. CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, Univ Rennes, 35000 Rennes, France
2. The Laboratory of Natural Resource of Sumatra (LBS) and Faculty of Pharmacy, Andalas University, 26163 Padang, Indonesia
3. Advanced Chemistry Development Inc. (ACD/Laboratories), 8 King Street, Toronto, ON M5C 1B5, Canada
4. Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
5. Program study of Pharmacy, Faculty of Sciences Medicine, Baiturrahmah University, 25586 Padang, Indonesia
6. Équipe “Chimie des Substances Naturelles” BioCIS, CNRS, Université Paris-Saclay, 17, Avenue des Sciences, 91400 Orsay, France