InChI=1S/C17H20O9/c18-11-6-5-10(24-11)7-8-1-3-9(4-2-8)25-17-14(21)12(19)13(20)15(26-17)16(22)23/h1-4,10,12-15,17,19-21H,5-7H2,(H,22,23)/t10-,12+,13+,14-,15+,17-/m1/s1