InChI=1/C18H24N4O3/c1-2-7-19-17(23)13-21-18(24)20-12-15-5-3-4-6-16(15)14-22-8-10-25-11-9-22/h1,3-6H,7-14H2,(H,19,23)(H2,20,21,24)/f/h19-21H 1221A9A2639BA8B7