You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(3-chloro-4-fluorophenyl)-3-[2-[(6-pyrrol-1-ylpyrimidin-4-yl)amino]ethyl]urea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H16ClFN6O
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