1. Departamento de Química Física, Universidad de Valencia, Avda Dr Moliner, 50, Burjassot, E-46100, Valencia, Spain
2. Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
3. Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia