InChI=1S/C17H22O9/c1-7(2)3-4-8-10(6-5-9(18)11(8)19)25-17-14(22)12(20)13(21)15(26-17)16(23)24/h3,5-6,12-15,17-22H,4H2,1-2H3,(H,23,24)