1. PTRL Europe GmbH, Helmholtzstrasse 22, Science Park I, D-89081 Ulm, Germany
2. DuPont Haskell Global Centers for Health and Environmental Sciences, Stine-Haskell Research Center, 1090 Elkton Road, Newark, Delaware 19714, United States
3. Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
4. DuPont Crop Protection, Stine-Haskell Research Center, 1090 Elkton Road, Newark, Delaware 19714, United States