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 1-[(5-methylthiophen-2-yl)methyl]-3-(5-oxo-1-phenylpyrrolidin-3-yl)urea is given. What is its corresponding molecular formula?
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C17H19N3O2S
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