InChI=1S/C16H20O9/c17-8-23-7-1-2-9-3-5-10(6-4-9)24-16-13(20)11(18)12(19)14(25-16)15(21)22/h3-6,8,11-14,16,18-20H,1-2,7H2,(H,21,22)