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