1,2-Ethanediamine, N-(6,11-dihydrodibenzo(b,e)thiepin-11-yl)-, (Z)-2-butenedioate (1:2) 117125-51-6 N-(6,11-Dihydrodibenzo(b,e)thiepin-11-yl)-1,2-ethanediamine (Z)-2-butenedioate (1:2) N-(6,11-Dihydrodibenzo(b,e)thiepin-11-yl)ethylenediamine bis(hydrogen maleate)