2-thiophenecarboxylic acid, 4-cyano-3-methyl-5-[(2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoro-1-oxoheptyl)amino]-, ethyl ester;Ethyl 4-cyano-3-methyl-5-[(2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoroheptanoyl)amino]thiophene-2-carboxylate
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