1. Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA.
2. Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA.
3. Discovery Sciences, Medicine Design, Pfizer Global Research and Development, Groton, CT 06340, USA.
4. Asymchem Life Science (Tianjin), Tianjin Economic-Technological Development Zone, Tianjin 300457, China.
5. Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA.