3-(((2-Oxo-3-oxazolidinyl)imino)methyl)-2-piperidino-4H-pyrido(1,2-a)pyrimidin-4-one HCl 35877-25-9 4H-Pyrido(1,2-a)pyrimidin-4-one, 3-(((2-oxo-3-oxazolidinyl)imino)methyl)-2-piperidino-, monohydrochloride