InChI=1/C15H20N4O2S/c1-9(2)19-5-4-11(8-19)17-13(20)12-6-10(7-16)15(22-3)18-14(12)21/h6,9,11H,4-5,8H2,1-3H3,(H,17,20)(H,18,21)/t11-/m1/s1/f/h17,19H 9050A14586A1F7D8