R 50970;SinoMedol;3-[2-[4-(4-Fluorobenzoyl)piperidino]ethyl]-2,7-dimethyl-4H-pyrido[1,2-a]pyrimidin-4-one;3-[2-[4-(4-fluorobenzoyl)piperidin-1-yl]ethyl]-2,7-dimethylpyrido[1,2-a]pyrimidin-4-one;3-[2-[4-(4-fluorobenzoyl)-1-piperidyl]ethyl]-2,7-dimethyl-4H-pyrido[1,2-a]pyrimidin-4-one;3-[2-[4-(4-Fluorobenzoyl)-1-piperidinyl]ethyl]-2,7-diMethyl-4H-pyrido[1,2-a]pyriMidin-4-one;4H-Pyrido[1,2-a]pyriMidin-4-one, 3-[2-[4-(4-fluorobenzoyl)-1-piperidinyl]ethyl]-2,7-diMethyl-