2H-Pyrido(3,2-b)-1,4-oxazine, 3,4-dihydro-4-(2-(diethylamino)ethyl)-, trihydrochloride 3,4-Dihydro-4-(2-(diethylamino)ethyl)-2H-pyrido(3,2-b)(1,4)oxazine 86979-77-3