InChI=1/C19H15N3/c1-13-20-18-16(14-8-4-2-5-9-14)12-17(22-19(18)21-13)15-10-6-3-7-11-15/h2-12H,1H3,(H,20,21,22)/f/h20H 5E5D4554483C580F