InChI=1/C18H26N4O4/c1-12-9-14(26-11-16(19)23)7-8-15(12)22-18(25)20-10-17(24)21-13-5-3-2-4-6-13/h7-9,13H,2-6,10-11H2,1H3,(H2,19,23)(H,21,24)(H2,20,22,25)/f/h20-22H,19H2 975C4DF09C3C7E8F