InChI=1/C18H20N6O2/c1-12-11-24-14-15(19-17(24)22(3)20-12)21(2)18(26)23(16(14)25)10-9-13-7-5-4-6-8-13/h4-8H,9-11H2,1-3H3 667F1165E5C7D03F