InChI=1S/C13H20O11/c1-4(6(15)11(19)20)2-3-5(14)23-13-9(18)7(16)8(17)10(24-13)12(21)22/h4,6-10,13,15-18H,2-3H2,1H3,(H,19,20)(H,21,22)