InChI=1/C18H32N4O2/c1-3-11-20-16(23)13-22(12-4-2)14-17(24)21-18(15-19)9-7-5-6-8-10-18/h3-14H2,1-2H3,(H,20,23)(H,21,24)/p+1/fC18H33N4O2/h20-22H/q+1 C17531B6E9419263