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