InChI=1S/C14H20N2O8S/c1-22-11-6-8(2-3-10(11)24-25(19,20)21)12-13(23-12)14(18)16-7-9(17)4-5-15/h2-3,6,9,12-13,17H,4-5,7,15H2,1H3,(H,16,18)(H,19,20,21)