InChI=1/C18H20N4O4S/c1-26-11-10-22-9-8-13-12-15(4-7-17(13)22)21-18(23)20-14-2-5-16(6-3-14)27(19,24)25/h2-9,12H,10-11H2,1H3,(H2,19,24,25)(H2,20,21,23)/f/h20-21H,19H2 F0FEC62CEB8847ED