InChI=1/C14H13N3O4/c1-14(2)9-7-8(3-4-11(9)16-13(18)21-14)10-5-6-12(15-10)17(19)20/h3-7,15H,1-2H3,(H,16,18)/f/h16H 78EE351F8FBC8BC1