1. Department of Chemistry, Virginia Military Institute, Lexington, Virginia 24450, United States
2. Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
3. Department of Entomology, Virginia Tech, Blacksburg, Virginia 24061, United States
4. Division of Plant and Soil Sciences, West Virginia University, Morgantown, West Virginia 26506, United States
5. Department of Biology, John Carroll University, University Heights, Ohio 44118, United States