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