InChI=1/C18H16N4O2/c1-4-12-22-17(23)15-16(21(3)18(22)24)19-14(20(15)2)11-10-13-8-6-5-7-9-13/h1,5-11H,12H2,2-3H3/b11-10+ 4E86468DF0442C45