InChI=1/C12H6N4O3S/c17-12-19-7-3-6(1-2-8(7)20-12)18-11-9-10(14-4-13-9)15-5-16-11/h1-5H,(H,13,14,15,16)/f/h14H 1FA1CF72FBE0D6CF