InChI=1/C21H16N4O3/c22-21(23)13-6-7-18-14(8-13)9-19(24-18)17-11-15(25(27)28)10-16(20(17)26)12-4-2-1-3-5-12/h1-11,24,26H,(H3,22,23)/f/h26h,22-23H2 8F3B120728BA6F2B