N-(2-methyl-3-oxoprop-1-enyl)glycine methyl ester

4-(3-methoxy-2-methylallylidene)-2-phenyloxazol-5(4H)-one

ethyl 2-benzoylamino-5-ethoxy-4-methylpenta-2,4-dienoate

4-甲基吡咯-2-羧酸甲酯