87997-52-2 DIBENZO(b,e)THIEPIN-11-CARBONITRILE, 6,11-DIHYDRO-11-(3-(4-METHYL-1-PIPERAZINYL) Dibenzo(b,e)thiepin-11-carbonitrile, 6,11-dihydro-11-(3-(4-methyl-1-piperazinyl)propyl)-, (Z)-2-butenedioate (1:2)