1,4-Bis(N-allylimino)benzene 2-propen-1-amine, N,N'-[1,4-phenylenedi(Z)methylidyne]bis- InChI=1/C14H16N2/c1-3-9-15-11-13-5-7-14(8-6-13)12-16-10-4-2/h3-8,11-12H,1-2,9-10H2/b15-11-,16-12 N,N'-[1,4-phenylenedi(Z)methylylidene]bisprop-2-en-1-amine