InChI=1/C16H18N4O/c17-13-3-1-2-11(8-13)10-20(14-5-6-14)15-7-4-12(9-19-15)16(18)21/h1-4,7-9,14H,5-6,10,17H2,(H2,18,21)/f/h18H2 F3CE044D896F6D7A