You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (5-chlorothiophen-2-yl) N-[4-methoxy-1-(2-methyl-3,4-dihydro-1H-isoquinoline-6-carbonyl)pyrrolidin-3-yl]carbamate into molecular formula.
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C21H24ClN3O4S
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