(-)-2-Imino-4-ethyloxycarbonyl-1,3-diazacycloheptane hydrochloride (-)-Hexahydro-2-imino-1H-1,3-diazepine-4-carboxylic acid ethyl ester hydrochloride 1H-1,3-Diazepine-4-carboxylic acid, hexahydro-2-imino-, ethyl ester, monohydrochloride, (-)- 25525-87-5 OG 30