1-Methyl-4-(2,3,4,5-tetrahydro-1-benzoxepin-5-yl)piperazine dihydrochloride hydrate 56071-40-0 Piperazine, 1-methyl-4-(2,3,4,5-tetrahydro-1-benzoxepin-5-yl)-, dihydrochloride, hydrate