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