InChI=1S/C13H20O11/c1-13(4-6(16)17,3-2-5(14)15)24-12-9(20)7(18)8(19)10(23-12)11(21)22/h7-10,12,18-20H,2-4H2,1H3,(H,14,15)(H,16,17)(H,21,22)