1. From the Korea Basic Science Institute (J.Y.J., G.-S.H.), Seoul, Korea; Department of physiology, College of Oriental Medicine (J.Y.J., H.-S.L., D.-G.K.), Wonkwang University, Iksan, Korea; Brain Disease Research Center (N.S.K., M.H.C., O.-S.B.), Korea Institute of Oriental Medicine, Daejeon, Korea; Graduate School of Analytical Science and Technology (G.-S.H.), Chungnam University, Daejeon, Korea; Department of Chemistry (D.H.R.), Sungkyunkwan University, Suwon, Korea.