1. Department of Chemistry, Government College University, Lahore, Pakistan
2. Faculty of Pharmacy, Universiti Teknologi MARA, Selangor, Malaysia
3. Atta-ur-Rahman Institute for Natural Products Discovery (AuRIns), Universiti Teknologi MARA, Selangor, Malaysia
4. Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, Pakistan