InChI=1/C16H16N4O/c17-15-14-13(10-3-1-6-12(21)7-10)8-20(11-4-2-5-11)16(14)19-9-18-15/h1,3,6-9,11,21H,2,4-5H2,(H2,17,18,19)/f/h17H2 EEAB1E5A5F21A4DF