1. Natural Product Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
2. Division of Research and Academic Support, National Cancer Institute, Bangkok, Thailand
3. Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom, Thailand
4. Department of Chemistry, University of British Columbia, Vancouver, Canada
5. Departments of Chemistry and Earth, Ocean & Atmospheric Sciences, University of British Columbia, Vancouver, Canada