1. Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road 200032, P. R. China
2. Research Computing Center, University of North Carolina, Chapel Hill, North Carolina 27599-3420
3. Syngenta, Jealott’s Hill International Research Centre, Bracknell, Berkshire RG42 6EY, U.K.