1. National Pesticide Engineering Research Center (Tianjin), Department of Chemical Biology, State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
2. Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, P. R. China
3. Syngenta Jealott’s Hill International Research Centre, Bracknell RG42 6EY, U.K.