InChI=1S/C16H20N4O4S/c1-11-4-3-5-13(8-11)19-14-6-7-17-9-15(14)25(23,24)20-16(22)18-12(2)10-21/h3-9,12,21H,10H2,1-2H3,(H,17,19)(H2,18,20,22)