1. Department of Chemistry, North Carolina State University Raleigh NC 27695 U.S.A.
2. State Key Laboratory of Bio‐organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences Shanghai 200032 China
3. Department of Chemistry, Carnegie Mellon University Pittsburgh PA 15213 U.S.A.
4. CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences Shenzhen Guangdong 518055 China