1. Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Laksi, Bangkok, Thailand
2. Program in Chemical Sciences, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Laksi, Bangkok, Thailand
3. Plant of Thailand Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
4. The Center of Excellence on Environmental Health and Toxicology, Commission on Higher Education, Ministry of Education, Bangkok, Thailand