1. Department of Chemistry, Faculty of Science and Engineering
2. Integrated Center Research (Bioscience) Laboratory, Nusa Cendana University, Jl. Adisucipto Penfui, 85001 Kupang, Indonesia
3. Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität, Universitätsstrasse 1, 40225 Düsseldorf, Germany
4. Department of Chemistry, Institute of Technology Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia