InChI=1S/C16H26O9/c1-2-3-4-5-6-7-8-9(14(20)21)24-16-12(19)10(17)11(18)13(25-16)15(22)23/h2,9-13,16-19H,1,3-8H2,(H,20,21)(H,22,23)