4,4'-(2α,4β-Di(4-cyanophenyl)cyclobutane-1α,3β-diyl)bispyridinium
4,4'-(2α,4β-Di(4-cyanophenyl)cyclobutane-1α,3β-diyl)bispyridinium ??
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4,4'-(2α,4β-Di(4-cyanophenyl)cyclobutane-1α,3β-diyl)bispyridinium C??? ??, ??, ??
4,4'-(2α,4β-Di(4-cyanophenyl)cyclobutane-1α,3β-diyl)bispyridinium ?? ?? ? ???
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4,4'-(2α,4β-Di(4-cyanophenyl)cyclobutane-1α,3β-diyl)bispyridinium ?? ??
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