InChI=1/C17H16N4O4S/c1-8-12(16(23)25-3)15(21-17(24)18-8)26-9(2)13-19-11-7-5-4-6-10(11)14(22)20-13/h4-7,9H,1-3H3,(H,18,21,24)(H,19,20,22)/t9-/m1/s1/f/h18,20H 52D1DD04DDC145D6