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-[(3,5-dimethyl-1H-pyrazol-4-yl)methyl]-3-[2-(3-nitrophenyl)ethyl]urea is given. What is its corresponding molecular formula?
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C15H19N5O3
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