1. State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin, Guangxi 541004, China
2. College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
3. Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.
4. Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
5. School of Chemistry and Bioscience, University of Bradford, Bradford, West Yorkshire BD7 1DP, U.K.