InChI=1S/C16H20N2O8/c17-4-3-6-5-18-7-1-2-8(10(19)9(6)7)25-16-13(22)11(20)12(21)14(26-16)15(23)24/h1-2,5,11-14,16,18-22H,3-4,17H2,(H,23,24)