InChI=1S/C19H26N6O2/c1-14-3-4-16(15(2)11-14)24-19(26)21-6-5-20-17-12-18(23-13-22-17)25-7-9-27-10-8-25/h3-4,11-13H,5-10H2,1-2H3,(H,20,22,23)(H2,21,24,26)