1,3-propanediamine, N,N'-bis(1-methylethyl)-1,3-diphenyl- InChI=1/C21H30N2/c1-16(2)22-20(18-11-7-5-8-12-18)15-21(23-17(3)4)19-13-9-6-10-14-19/h5-14,16-17,20-23H,15H2,1-4H N,N'-diisopropyl-1,3-diphenylpropane-1,3-diamine