You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[2-(tert-butylamino)-2-oxoethyl]-N-methyl-2-[(2-oxo-1,3-dihydrobenzimidazol-5-yl)sulfonylamino]benzamide into molecular formula.
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C21H25N5O5S
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