InChI=1S/C19H26O9/c1-9(2)18(25)26-8-10(3)11-4-6-12(7-5-11)27-19-15(22)13(20)14(21)16(28-19)17(23)24/h4-7,9-10,13-16,19-22H,8H2,1-3H3,(H,23,24)