1. College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, P. R. China
2. Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing 210095, P. R. China
3. Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458, United States