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system
Translate the chemical IUPAC name [1-[(6-tert-butyl-3-cyano-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)amino]-1-oxobutan-2-yl] 1,3-benzoxazole-6-carboxylate into its molecular formula.
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C25H27N3O4S
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