2,2'-[3-Acetylamino-4-(5,6-dichlorobenzothiazol-2-ylazo)phenylimino]bis(acetic acid methyl) ester;2-[2-Acetylamino-4-[N,N-bis(methoxycarbonylmethyl)amino]phenylazo]-5,6-dichlorobenzothiazole
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