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4'-[3-[2-Hydroxy-3-[N-(p-methoxyphenyl)]carbamoylnaphthylazo]-4-methylbenzoylamino]benzenesulfonic acid calcium salt Structure

4'-[3-[2-Hydroxy-3-[N-(p-methoxyphenyl)]carbamoylnaphthylazo]-4-methylbenzoylamino]benzenesulfonic acid calcium salt