(E)-2,9-Difluoro-11-(3-dimethylaminopropylidene)-6,11-dihydrodibenzo(b,e)thiepin maleate 1-Propanamine, 3-(2,9-difluorodibenzo(b,e)thiepin-11(6H)-ylidene)-N,N-dimethyl-, (E)-, (Z)-2-butenedioate (1:1) 81890-61-1