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