10,11-Dihydro-5-(3-(methylamino)-2-oxo-propylidene)-5H-dibenzo(a,d)cycloheptene hydrochloride 2-Propanone, 1-(10,11-dihydro-5H-dibenzo(a,d)cyclohepten-5-ylidene)-3-(methylamino)-, hydrochloride 27448-07-3