InChI=1S/C17H20N4O4S/c1-4-6-12-14-15(21(3)20-12)17(22)19-16(18-14)11-9-10(26(23)24)7-8-13(11)25-5-2/h7-9,26H,4-6H2,1-3H3,(H,18,19,22)