You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 1-[1-(2-fluorophenyl)-5-methylpyrazol-4-yl]-3-[(1S)-1-[(2R)-oxolan-2-yl]propyl]urea into its molecular formula.
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C18H23FN4O2
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