1. H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi,
Karachi, Pakistan
2. Department of Chemistry, College of Science, King Saud University,
Riyadh, Saudi Arabia
3. Department of Pharmacy, Islamia University,
Bahawalpur, Pakistan
4. Department of Zoology, College of Science, King Saud University,
Riyadh, Saudi Arabia