11-(4-Methylpiperazino)-8,9,11,12-tetrahydro-7H-benz(b)indeno(5,6-f)thiepin maleate 56096-87-8 Piperazine, 1-methyl-4-(2,3,10,11-tetrahydro-1H-benz(b)indeno(5,6-f)thiepin-11-yl)-, (Z)-2-butenedioate (1:1)