Affiliation: | 1. Department of Chemistry, University of Michigan-Flint, 303E Kearsley, Flint, MI 48502, United States;2. College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China;3. East China Medical Biotechnology Research Institute, Nanjing 210002, China;4. Department of Chemistry, Wellesley College, Wellesley, MA 02481, United States |