ethyl 4-(furan-2-yl)-2,4-dioxobutyrate

乙醇

水合肼

4-呋喃-2-基-2,4-二氧代丁酸甲酯

3-(2-furan-2-yl-2-oxoethyl)-2H-[1,2,4]triazino-[2,3-c]quinazolin-2-one