InChI=1/C18H18N4O4S/c1-22(2)27(25,26)10-3-4-15-12(7-10)13(18(24)21-15)8-16-11-5-6-19-17(23)14(11)9-20-16/h3-4,7-9,20H,5-6H2,1-2H3,(H,19,23)(H,21,24)/b13-8-/f/h19,21H 143474240180230B