You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 4-[3-[2-[[3-cyano-4-methyl-5-(phenylcarbamoyl)thiophen-2-yl]amino]-2-oxoethyl]sulfanylanilino]-4-oxobutanoic acid into molecular formula.
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C25H22N4O5S2
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