InChI=1S/C15H22O9/c16-8-6-4-2-1-3-5-7-9(17)23-15-12(20)10(18)11(19)13(24-15)14(21)22/h2,4-5,7,10-13,15-16,18-20H,1,3,6,8H2,(H,21,22)/b4-2-,7-5+