InChI=1/C21H18N4O/c26-19-13-7-6-12-18(19)24-21-23-17-11-5-4-10-16(17)20(25-21)22-14-15-8-2-1-3-9-15/h1-13,26H,14H2,(H2,22,23,24,25)/p+1/fC21H19N4O/h22-24H/q+1 C505ADE46D44642E