You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[4-amino-2-[2-(3,5-dimethylanilino)-2-oxoethyl]sulfanyl-6-oxo-1H-pyrimidin-5-yl]benzamide is given. What is its corresponding molecular formula?
user
C21H21N5O3S
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