You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-fluoro-4-N-[4-fluoro-3-(trifluoromethyl)phenyl]-2-N-[(Z)-[4-(trifluoromethoxy)phenyl]methylideneamino]pyrimidine-2,4-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H11F8N5O
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