You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 7-(2-chloro-4-fluorophenyl)-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H8ClFN4O2
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