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