InChI=1S/C16H20O8/c17-10(8-4-7-9-5-2-1-3-6-9)23-16-13(20)11(18)12(19)14(24-16)15(21)22/h1-3,5-6,11-14,16,18-20H,4,7-8H2,(H,21,22)