preferred_name: 3-O-(galactopyranosyl-(1-2)-glucuronopyrnosyl)quillaic acid-28-O-(arabinopyranosyl)-(1-2)-arabinopyranosyl-(1-3)-xylopyranosyl-(1-4)-rhamnopyranosyl-(1-2))-(6-O-acetylglucopyranosyl-(1-3)-4-O-acetylfucopyranoside