InChI=1S/C16H20O9/c17-9-5-1-3-8(7-9)4-2-6-10(18)24-16-13(21)11(19)12(20)14(25-16)15(22)23/h1,3,5,7,11-14,16-17,19-21H,2,4,6H2,(H,22,23)