(E)-11-(3-Dimethylaminopropylidene)-6,11-dihydrodibenzo(b,e)thiepine-9-carboxylic acid HCl 138970-96-4 Dibenzo(b,e)thiepin-9-carboxylic acid, 6,11-dihydro-11-(3-(dimethylamino)propylidene)-, hydrochloride VUFB 17,744