InChI=1/C15H16N4O/c16-11-3-1-10(2-4-11)15-18-13-9-12(17)5-6-14(13)19(15)7-8-20/h1-6,9,20H,7-8,16-17H2/p+1/fC15H17N4O/h18H/q+1 0D8A7DB01CA330FE