1-(10,11-Dihydro-8-(methylsulfinyl)dibenzo(b,f)thiepin-10-yl)piperazine S-oxide maleate 54918-42-2 Piperazine, 1-(10,11-dihydro-8-(methylsulfinyl)dibenzo(b,f)thiepin-10-yl)-, S-oxide, (Z)-2-butenedioate