InChI=1/C16H16N4O/c17-12-3-4-13-14(10-20-15(13)8-12)16(21)19-7-5-11-2-1-6-18-9-11/h1-4,6,8-10,20H,5,7,17H2,(H,19,21)/f/h19H 4F94714D1C2497FE