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4-Amino-benzenesulfonic acid monosodium salt 1,1,2,2-Tetrakis(4-bromophenyl)ethene Aniline Sulfanilamide Metanilic acid Tetrakis(4-aminophenyl)methane tetrakis(4-nitrophenyl)Methane 4,4',4'',4'''-methanetetrayltetrabenzonitrile 4,4',4'',4'''-silanetetrayltetrabenzaldehyde Tetrakis(4-ethynylphenyl)ethene