1,2-Bis(4-(4-methylsulfonyl)benzamido)-1,2-di-4-pyridylethane 77502-35-3 Benzamide, N,N'-(1,2-di-4-pyridinyl-1,2-ethanediyl)bis(4-(methylsulfonyl)- N,N'-(1,2-Di-4-pyridinyl-1,2-ethanediyl)bis(4-(methylsulfonyl)benzamide)