InChI=1S/C15H20O9/c1-3-6-4-5-7(16)12(22-2)11(6)23-15-10(19)8(17)9(18)13(24-15)14(20)21/h4-5,8-10,13,15-19H,3H2,1-2H3,(H,20,21)