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