InChI=1/C15H15N5O/c1-20(2)13-8-7-10(9-16-13)14(21)19-15-17-11-5-3-4-6-12(11)18-15/h3-9H,1-2H3,(H2,17,18,19,21)/f/h17-18H B945B0F357F93355