133306-07-7 4H-Imidazo(4,5-c)quinolin-4-one, 1,5-dihydro-5-butyl-1-ethyl-, monohydrochloride, hydrate 5-Butyl-1-ethyl-1,5-dihydro-1H-imidazo(4,5-c)quinolin-4(5H)-one hydrochloride hydrate