InChI=1S/C20H24N4O4S/c1-14(24(12-26)11-17-10-22-15(2)23-19(17)21)18(8-9-25)29-13-28-20(27)16-6-4-3-5-7-16/h3-7,10,12,25H,8-9,11,13H2,1-2H3,(H2,21,22,23)/b18-14-