2-Methyl-4-(1-phenyl-2-(1-piperidinyl)ethyl)-3,4-dihydro-2H-pyrido(3,2-b)-1,4-oxazine 3HCl 2H-Pyrido(3,2-b)-1,4-oxazine, 3,4-dihydro-2-methyl-4-(1-phenyl-2-(1-piperidinyl)ethyl)-, trihydrochloride 88810-13-3