1. Faculty of Chemistry, Vinh University, 182-Le Duan, Vinh City, Nghean Province, Vietnam
2. Faculty of Biology, Vinh University, 182-Le Duan, Vinh City, Nghean Province, Vietnam
3. Natural Products Research Unit, Department of Chemistry, Faculty of Science, Lagos State University, Badagry Expressway Ojo, P.M.B. 0001, Lasu Post Office, Ojo, Lagos, Nigeria
4. Department of Natural Science, Hong Duc University, Thanhhoa 41000, Vietnam