Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)

Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences (J.G.Y., K.G., M.D., Á.N., K.H., T.T.T., P.T.), and Department of Chemistry and Biochemistry, Division of Physical Sciences (Á.N.), University of California, San Diego, La Jolla, California; and Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, California (N.G., M.D., J.R.F., K.B.S., V.V.F.)