(3beta,8xi,9xi,14xi,16xi,17xi,22R,25S)-26-(beta-D-glucopyranosyloxy)-22-hydroxyfurost-5-en-3-yl beta-D-glucopyranosyl-(1->3)-beta-D-glucopyranosyl-(1->3)-beta-D-glucopyranosyl-(1->4)-beta-D-galactopyranosyl-(1->3)-beta-D-glucopyranoside