1. State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
2. School of Agriculture and Forestry Technology, Longnan Teacher’s College, Longnan 742500, China
3. The First School of Clinical Medicine, The First Hospital of Lanzhou University, Lanzhou 730000, China