InChI=1/C18H19N9O/c19-16-22-17(23-18-21-15(24-27(16)18)14-2-1-11-28-14)26-9-7-25(8-10-26)12-13-3-5-20-6-4-13/h1-6,11H,7-10,12H2,(H2,19,21,22,23,24)/f/h19,22H A4FC28FC6E30ED39