1,2-Ethanediamine, N,N-diethyl-N'-(6,11-dihydro-11-phenyldibenzo(b,e)thiepin-11-yl)-, (Z)-2-butenedioate (1:1) 11-(2-Diethylaminoethylamino)-11-phenyl-6,11-dihydrodibenzo(b,e)thiepin maleate 84964-47-6