1. Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California 94143, United States
2. Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
3. Chemistry and Chemical Biology Graduate Program, University of California, San Francisco, San Francisco, California 94143, United States
4. Department of Electrical, Computer, and Energy Engineering, University of Colorado, Boulder, Colorado 80309, United States
5. Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, California 94143, United States