(2E,4E)-4-(4,4-Dimethylpent-2-yn-1-ylidene)-N,N'-dimethyl-N,N'-bis(naphthalen-1-ylmethyl)pent-2-ene-1,5-diamine , (2E,4E)-4-(4,4-dimethylpent-2-yn-1-ylidene)-N,N′-dimethyl-N,N′-bis(naphthalen-1-ylmethyl)pent-2-ene-1,5-diamine Dihydrochloride