3-[3-Hydroxy-4-[(1,3-dioxoisoindolin-5-yl)azo]-2-naphthoylamino]benzoic acid ethyl ester C??? ??, ??, ??

3-[3-Hydroxy-4-[(1,3-dioxoisoindolin-5-yl)azo]-2-naphthoylamino]benzoic acid ethyl ester ?? ?? ? ???

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3-[3-Hydroxy-4-[(1,3-dioxoisoindolin-5-yl)azo]-2-naphthoylamino]benzoic acid ethyl ester ?? ??