anti-(1α,2β,3α,4β)-1,2-bis(4-methoxyphenyl)-3,4-dimethylcyclobutane

rac-(1α,2β,3β,4α)-1,2-bis(4-methoxyphenyl)-3,4-dimethylcyclobutane

茴香烯

rac-(1α,2β,3α,4α)-1,2-bis(4-methoxyphenyl)-3,4-dimethylcyclobutane

rac-(1α,2α,3α,4β)-1,2-bis(4-methoxyphenyl)-3,4-dimethylcyclobutane