InChI=1/C17H16N4O4S/c22-15(10-9-12-5-2-1-3-6-12)18-17(26)20-19-16(23)13-7-4-8-14(11-13)21(24)25/h1-8,11H,9-10H2,(H,19,23)(H2,18,20,22,26)/f/h18-20H AB93322D68BE6768