Isolation and Structure Elucidation of Cirensenosides Q and R The Type and Evolution of Vassel Element‘s Perforation Plate of Oplopanax elatus X-ray Diffraction of Tall Oplopanax (Oplopanax elatus) Studies on Chemical Constituents of the Root of Oplopanax elatus Nakai Studies on Chemical Constituents from Stems of Oplopanax elatvs Nakai