InChI=1S/C19H26O9/c1-3-4-13(20)26-9-10(2)11-5-7-12(8-6-11)27-19-16(23)14(21)15(22)17(28-19)18(24)25/h5-8,10,14-17,19,21-23H,3-4,9H2,1-2H3,(H,24,25)