InChI=1S/C16H24O11/c17-8(14(22)23)6-4-2-1-3-5-7-9(18)26-16-12(21)10(19)11(20)13(27-16)15(24)25/h2,4,8,10-13,16-17,19-21H,1,3,5-7H2,(H,22,23)(H,24,25)/b4-2-