InChI=1S/C16H20O11/c1-24-7-4-3-6(5-8(7)25-2)12(14(20)21)26-16-11(19)9(17)10(18)13(27-16)15(22)23/h3-5,9-13,16-19H,1-2H3,(H,20,21)(H,22,23)