1-(6-Methoxydibenzo(b,f)thiepin-10-yl)-4-methylpiperazine (Z)-2-butenedioate 58722-26-2 6-Methoxy-10-(4-methylpiperazino)dibenzo(b,f)thiepin maleate Piperazine, 1-(6-methoxydibenzo(b,f)thiepin-10-yl)-4-methyl-, (Z)-2-butenedioate (1:1)