InChI=1/C14H14N4O4S/c15-14(16)18-23(21,22)12-5-2-10(3-6-12)17-8-9-1-4-11(19)7-13(9)20/h1-8,19-20H,(H4,15,16,18)/f/h15-16H2 3EA835FC75CFAF9A