InChI=1S/C16H22O9/c1-6-4-9(7(5-8(6)17)16(2,3)23)24-15-12(20)10(18)11(19)13(25-15)14(21)22/h4-5,10-13,15,17-20,23H,1-3H3,(H,21,22)