You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-(cyclopropanecarbonylamino)phenyl]-2-(furan-2-yl)-4-methyl-6-methylsulfanylpyrimidine-5-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H20N4O3S
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