4-carboxybenzeneacetic acid ethyl ester

2-(4-甲基苯基)-2-氧代乙酸乙酯

1-(2,2-diphenylethenyl)-4-methylbenzene

1-[1-bromo-2,2-bis(2-methoxyphenyl)ethenyl]-4-methylbenzene

1-[2,2-bis(2-methoxyphenyl)ethenyl]-4-methylbenzene