You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-(4-fluorophenyl)-5-(3-oxobut-1-enyl)-6-propan-2-ylpyrimidin-2-yl]-N-methylmethanesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H22FN3O3S
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