InChI=1/C14H18N4O2/c1-19-12-3-2-11-13(15-12)16-14(20-11)18-9-8-17-6-4-10(18)5-7-17/h2-3,10H,4-9H2,1H3/p+1/fC14H19N4O2/h17H/q+1 3A892887FD8AB0A0