1-(8-Cyclopropyl-10,11-dihydrodibenzo(b,f)thiepin-10-yl)-4-methylpiperazine maleate 54997-72-7 Piperazine, 1-(8-cyclopropyl-10,11-dihydrodibenzo(b,f)thiepin-10-yl)-4-methyl-, (Z)-2-butenedioate (1:1)