InChI=1/C15H16N4O/c1-4-19-13-11(6-5-7-16-13)15(20)18-12-9(2)8-10(3)17-14(12)19/h5-8H,4H2,1-3H3,(H,18,20)/p+1/fC15H17N4O/h17-18H/q+1 609A4C496DD1A7D6