Methyl 2-(1-(3-formyl-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)-3-oxopiperazin-2-yl)acetate 5g

Methyl 2-(1-(3-formyl-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)-3-oxopiperazin-2-yl)acetate 5g