InChI=1/C18H26N4O2/c1-3-7-21-16-14(17(23)22(8-4-2)18(21)24)19-15(20-16)13-10-11-5-6-12(13)9-11/h11-13H,3-10H2,1-2H3,(H,19,20)/t11-,12+,13-/m1/s1/f/h19H A1FC30346756ED2F