[1,1'-Biphenyl]-4,4'-diethanaminium,N,N,N',N'-tetrakis(2-ethoxyethyl)-N,N'-dimethyl-b,b'-dioxo-, dibromide (9CI);[4,4'-Biphenylenebis(2-oxoethylene)]bis[bis(2-ethoxyethyl)methylammoniumbromide]
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