1-Methyl-4-thieno(2,3-c)(2)benzothiepin-4(9H)-ylidenepiperidine maleate 15185-97-4 4-(1-Methyl-4-piperidylidene)-4,9-dihydrothieno(2,3-b)benzo(e)thiepin hydrogen maleate Piperidine, 1-methyl-4-thieno(2,3-c)(2)benzothiepin-4(9H)-ylidene-, maleate (1:1)