InChI=1/C15H18N4O2S/c1-9-7-14(11-5-3-4-6-12(11)17-9)22-8-13(15(21)19-16)18-10(2)20/h3-7,13H,8,16H2,1-2H3,(H,18,20)(H,19,21)/t13-/m1/s1/f/h18-19H 44E74E93E6EA703D