InChI=1S/C17H26O9/c1-2-3-7-10(8-5-4-6-9-11(18)19)25-17-14(22)12(20)13(21)15(26-17)16(23)24/h5-6,8-10,12-15,17,20-22H,2-4,7H2,1H3,(H,18,19)(H,23,24)/b8-5-,9-6+