1. Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong, 515063, P. R. China
2. Cancer Hospital of Shantou University Medical College, Guangdong, 515041, P. R. China
3. Department of Medical Chemistry, Shantou University Medical College, Shantou, Guangdong, 515041, P. R. China
4. The Second Affiliated Hospital of Shantou University Medical College, Guangdong, 515041, P. R. China
5. Department of Computer Science, College of Engineering, Shantou University, Guangdong, 515063, P. R. China
6. Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong S. A. R., P. R. China