InChI=1/C18H20N4O4S/c23-17(19-12-6-4-5-7-12)18(24)20-16-14-10-27(25,26)11-15(14)21-22(16)13-8-2-1-3-9-13/h1-3,8-9,12H,4-7,10-11H2,(H,19,23)(H,20,24)/f/h19-20H 51EA960A80E2B1F0