InChI=1/C22H20N4O/c27-22(25-19-8-2-1-3-9-19)26(15-17-6-5-12-23-14-17)16-18-7-4-10-21-20(18)11-13-24-21/h1-14,21H,15-16H2,(H,25,27)/t21-/m0/s1/f/h25H EEC2E41BCBCE66A8