InChI=1/C18H15N5/c1-13-17(23-12-6-5-9-16(23)20-13)15-10-11-19-18(22-15)21-14-7-3-2-4-8-14/h2-12H,1H3,(H,19,21,22)/f/h21H 868F240B8501AFC6