InChI=1S/C21H35N5/c1-3-10-20-18(8-1)22-12-13-23-19-9-2-4-11-21(19)25-15-17-7-5-6-16(26-17)14-24-20/h5-7,18-25H,1-4,8-15H2/t18-,19-,20-,21-/m0/s1