1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
2. Guangdong Zorun Pharmaceutical Research and Development Co. LTD, Guangzhou 510700, P. R. China
3. College of Chemistry and Materials Science, Nanning Normal University, Nanning 530001, P. R. China
4. State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, P. R. China