You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[5-[1-ethyl-7-(methylamino)-2-oxo-1,6-naphthyridin-3-yl]-2-fluoro-4-methylphenyl]-3-(2-phenyl-5-propan-2-ylpyrazol-3-yl)urea into its molecular formula.
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C31H32FN7O2
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