InChI=1/C18H18N4O/c23-18(21-14-11-19-20-12-14)22-10-4-9-17(22)16-8-3-6-13-5-1-2-7-15(13)16/h1-3,5-8,11-12,17H,4,9-10H2,(H,19,20)(H,21,23)/t17-/m0/s1/f/h19,21H 4D9045E1D8B1A180