1. Department of Chemistry, Columbia University, New York, New York 10027, United States
2. Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, United States
3. Department of Neuroscience, Department of Neurology, Yale University, New Haven, Connecticut 06510, United States
4. Department of Neuroscience, Barnard College, New York, New York 10027, United States
5. Department of Quantitative and Computational Biology, Department of Chemistry, Dornsife Center for New Technologies in Drug Discovery and Development, Bridge Institute, Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, California 90089, United States
6. Department of Chemistry, and Zuckerman Institute of Mind, Brain, Behavior, Columbia University, New York, New York 10027, United States