1. Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
2. Howard Hughes Medical Institute, California Institute of Technology, Pasadena, CA 91125, USA.
3. Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA.
4. Agios Pharmaceuticals, 38 Sidney Street, Cambridge, MA 02139, USA.
5. Materials and Process Simulation Center, California Institute of Technology, Division of Chemistry and Chemical Engineering, 1200 East California Boulevard, Pasadena, CA 91125, USA.