InChI=1S/C18H24O9/c1-9(3-4-11-5-7-12(8-6-11)26-10(2)19)25-18-15(22)13(20)14(21)16(27-18)17(23)24/h5-9,13-16,18,20-22H,3-4H2,1-2H3,(H,23,24)