1. Department
of Chemistry, University of Illinois at Urbana−Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
2. C.
Eugene Bennett Department of Chemistry, West Virginia University, 217 Clark Hall, Prospect Street, Morgantown, West Virginia 26506, United States
3. Department of Pharmaceutics & Pharmaceutical Technology, Faculty of Pharmacy, The University of Jordan, Amman 11942, Jordan