You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[5-chloro-3-[2-(2-chloropyrimidin-4-yl)acetyl]-2-fluorophenyl]propane-1-sulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H14Cl2FN3O3S
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