4-[2-(4-ethynyl-2,5-dimethoxyphenyl)ethenyl]-2,6-dimethyl-1-nitrobenzene

5-[(E)-2-(3,5-dimethyl-4-nitrophenyl)vinyl]-2-(methoxymethoxy)-1,3-dimethylbenzene

4-[(E)-2-(3,5-dimethyl-4-nitrophenyl)vinyl]-3,5-dimethoxyphenol