1. Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
2. Therapeutic
Chemistry Department, National Research Centre, Dokki, Cairo, Egypt
3. Department
of Chemistry and Chemical Biology, Cornell University, 120 Baker Lab, Ithaca, New York 14853, United States
4. Department
of Plant and Microbial Biology, University of California, Berkeley, California 94720, United States