InChI=1S/C16H20O9/c17-8-23-7-10(6-9-4-2-1-3-5-9)24-16-13(20)11(18)12(19)14(25-16)15(21)22/h1-5,8,10-14,16,18-20H,6-7H2,(H,21,22)