has role is protonated form of has functional parent pentacyclic triterpenoid prodrug triterpenoid saponin soyasaponin III CHEBI:62867 A triterpenoid saponin that is composed of soyasapogenol B having a β-<small>D</small>-galactopyranosyl-(1→2)-β-<small>D</small>-glucopyranosiduronic acid moiety attached at the 3-position via a glycosidic linkage. hepatoprotective agent soyasaponin III(1-) soyasapogenol B