1. Institute of Pharmaceutical
Biology and Biotechnology, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
2. Faculty of Science, Department of Chemistry, University of Douala,
PO Box 24157, 2701 Douala, Cameroon
3. Department of Computer Science, Texas A&M University, 710 Ross St., College Station, Texas 77843, United States
4. Institute
of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany