11-(3-Dimethylaminopropylidene)-6,11-dihydrodibenz[b,e]oxepin; (E)-3-(Dibenzo[b,e]oxepin-11(6H)-ylidene)-N,N-dimethylpropan-1-amine; 3-(Dibenzo[b,e]oxepin-11(6H)-ylidene)-N,N-dimethylpropan-1-amine;