1-(10,11-Dihydro-8-ethyldibenzo(b,f)thiepin-10-yl)piperazine maleate 54997-55-6 8-Ethyl-10-piperazino-10,11-dihydrodibenzo(b,f)thiepin maleate Piperazine, 1-(10,11-dihydro-8-ethyldibenzo(b,f)thiepin-10-yl)-, (Z)-2-butenedioate (1:1)