InChI=1/C15H12N4O2/c1-2-8-18-14(20)12-13(17-10-16-12)19(15(18)21)9-11-6-4-3-5-7-11/h1,3-7,10H,8-9H2,(H,16,17)/f/h16H E5C8CA658F1BD015