Quillaic acid 3-O-beta-D-xylosyl-1,3-(beta-D-galactosyl-1,2)-beta-D-glucuronide 28-O-beta-D-apiosyl-1,3-beta-D-xylosyl-1,4-(beta-D-glucosyl-1,3)-alpha-L-rhamnosyl-1,2-(alpha-L-rhamnosyl-1,3)-4-O-acetyl-beta-D-fucoside