InChI=1S/C20H16N6O/c21-19-23-15-9-17-16(8-14(15)18(27)26-19)24-20(25-17)22-10-12-6-3-5-11-4-1-2-7-13(11)12/h1-9H,10H2,(H2,22,24,25)(H3,21,23,26,27)