InChI=1/C20H17N5O2/c1-21-20(27)15-6-4-14(5-7-15)17-10-11-18-22-23-19(25(18)24-17)12-13-2-8-16(26)9-3-13/h2-11,26H,12H2,1H3,(H,21,27)/f/h21H 70551C9E9F23D8D7