InChI=1S/C17H22O9/c1-8(2)17(16(23)24,9-6-4-3-5-7-9)26-15-12(20)10(18)11(19)13(25-15)14(21)22/h3-8,10-13,15,18-20H,1-2H3,(H,21,22)(H,23,24)