InChI=1/C14H18N4O2/c1-18(2)8-7-16-13(19)14(20)17-11-3-4-12-10(9-11)5-6-15-12/h3-6,9,15H,7-8H2,1-2H3,(H,16,19)(H,17,20)/p+1/fC14H19N4O2/h16-18H/q+1 B48F93C2792D3DB2