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What is the molecular formula of the compound with this IUPAC name methyl 2-[[2-[2-[(3-ethoxy-4-hydroxyphenyl)methylidene]hydrazinyl]-2-oxoacetyl]amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate ?
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C21H23N3O6S
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