1. Department of Natural Sciences & Technology, Tay Nguyen University, Buon Ma Thuot, Vietnam
2. Department of Chemistry, University of Sciences, Hue University, Hue, Vietnam
3. Department of Chemistry, University of Education, Hue University, Hue, Vietnam
4. Faculty of Traditional Medicine, University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam
5. Institute of Applied Science and Technology, van Lang University, Ho Chi Minh City, Vietnam