InChI=1S/C18H27N5O2/c19-18(20)14-1-3-15(4-2-14)22-9-11-23(12-10-22)16-5-7-21(8-6-16)13-17(24)25/h1-4,16H,5-13H2,(H3,19,20)(H,24,25)