InChI=1S/C19H24O9/c1-8-5-11-18(6-25-9(2)20,14(24)12(8)22)17(4)15(27-10(3)21)13(23)16(28-11)19(17)7-26-19/h5,11,13-16,23-24H,6-7H2,1-4H3