InChI=1S/C16H24O11/c17-9(18)5-3-1-2-4-8(6-7-10(19)20)26-16-13(23)11(21)12(22)14(27-16)15(24)25/h1-2,8,11-14,16,21-23H,3-7H2,(H,17,18)(H,19,20)(H,24,25)/b2-1-