InChI=1/C21H16N4O/c22-13-17-18(14-7-3-1-4-8-14)23-21(25-20(26)16-11-12-16)24-19(17)15-9-5-2-6-10-15/h1-10,16H,11-12H2,(H,23,24,25,26)/f/h25H 47A451D1DE34B816