InChI=1S/C19H26O9/c1-9(7-11-3-5-12(6-4-11)10(2)17(23)24)8-27-19-15(22)13(20)14(21)16(28-19)18(25)26/h3-6,9-10,13-16,19-22H,7-8H2,1-2H3,(H,23,24)(H,25,26)