InChI=1S/C15H20N2O8S/c1-15(2)14(20)13(19)11-10(25-15)4-3-8(12(11)17)9(18)5-7(16)6-24-26(21,22)23/h3-4,7,14,20H,5-6,16-17H2,1-2H3,(H,21,22,23)