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