1. Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 P. R. China
2. School of Pharmaceutical Sciences; Xiamen University; Xiamen 361102 P. R. China
3. The Key Laboratory for Cancer Metabolomics of Shenzhen, Graduate School at Shenzhen; Tsinghua University; Shenzhen 518055 P. R. China