1r.3t-bis-(2.2-dicarboxy-vinyl)-2c.4t-diphenyl-cyclobutane

1,3-Bis-(3,3-dichloracryloyl)-2,4-diphenyl-cyclobutan

.β.-Truxinic acid

苯丙炔酸

1,1-dichloro-5-phenylpenta-1,4-dien-3-one