1-甲基尿嘧啶

3-乙氧基丙烯酸

methyl 3-(3-ethoxyprop-2-enoylamino)benzoate

(E)-3-ethoxy-N-[[3-hydroxy-4-(hydroxymethyl)cyclopentyl]carbamoyl]prop-2-enamide

(E)-3-ethoxy-N-[[2-hydroxy-4-(hydroxymethyl)cyclopentyl]carbamoyl]prop-2-enamide