InChI=1S/C19H22N6O2/c26-18-11-4-1-5-13(17(11)15-7-3-9-25(15)18)21-19(27)22-16-10-14(23-24-16)12-6-2-8-20-12/h1,4-5,10,12,15,20H,2-3,6-9H2,(H3,21,22,23,24,27)/t12-,15-/m0/s1