InChI=1S/C16H22O9/c1-15-6-2-5(3-7(6)15)16(15,14(22)23)4-24-13-10(19)8(17)9(18)11(25-13)12(20)21/h5-11,13,17-19H,2-4H2,1H3,(H,20,21)(H,22,23)