(Z)-3-(4-chlorophenyl)-2-methylprop-2-enoic acid

methyl 3-acetoxy-3-(4-chlorophenyl)-2-methylenepropanoate

甲醛

1-氯-4-(1-丙炔-1-基)苯

ethyl 3-(4-chlorophenyl)-2-methyl-2-propenoate