2H-Pyrido(3,2-b)-1,4-oxazine, 3,4-dihydro-2-ethyl-4-(2-morpholinoethyl)-, trihydrochloride 3,4-Dihydro-2-ethyl-4-(2-morpholinoethyl)-2H-pyrido(3,2-b)(1,4)oxazine 86979-90-0