InChI=1/C18H18N4O/c1-12-10-16(14-7-3-2-6-13(12)14)20-18(23)21-22-11-19-15-8-4-5-9-17(15)22/h2-9,11-12,16H,10H2,1H3,(H2,20,21,23)/t12-,16-/m1/s1/f/h20-21H 1B66CBA881E7207E