SOYASAPONIN IV

(4S)-3β-[2-O-(α-L-Arabinopyranosyl)-β-D-glucurono pyranosyloxy]oleana-12-ene-22β,24-diol

[22β,24-Dihydroxyolean-12-en-3β-yl]2-O-(α-L-arabinopyranosyl)-β-D-glucopyranosiduronic acid