bis[[2-[[2-cyano-3-[4-(diethylamino)phenyl]-1-oxoallyl]oxy]ethyl]dimethyl(p-xylene-alpha,alpha'-diammonium)] dichloride C??? ??, ??, ??

bis[[2-[[2-cyano-3-[4-(diethylamino)phenyl]-1-oxoallyl]oxy]ethyl]dimethyl(p-xylene-alpha,alpha'-diammonium)] dichloride ?? ?? ? ???

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bis[[2-[[2-cyano-3-[4-(diethylamino)phenyl]-1-oxoallyl]oxy]ethyl]dimethyl(p-xylene-alpha,alpha'-diammonium)] dichloride ?? ??