InChI=1/C16H20N4OS/c1-20(10-15(21)17-13-7-8-13)9-14-11-22-16(19-14)18-12-5-3-2-4-6-12/h2-6,11,13H,7-10H2,1H3,(H,17,21)(H,18,19)/f/h17-18H FA3FF227787AA313