1. School of Chemistry and Chemical Engineering, University of South China, No. 28, Changsheng West Road, Hengyang, Hunan 421001, P. R. China
2. Medical Imaging Key Laboratory of Sichuan Province, North Sichuan Medical College, Nanchong, Sichuan 637000, P. R. China
3. State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, P. R. China
4. School of Science, Xi’an University of Technology, Xi’an 710048, P. R. China