16174-79-1 Dibenzo(b,f)thiepin, 8-tert-butyl-10,11-dihydro-10-(4-methylpiperazino)-, hydrogen maleate Piperazine, 1-(8-tert-butyl-10,11-dihydrodibenzo(b,f)thiepin-10-yl)-4-methyl-, maleate, hydrate (2:4:1)