You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(4-bromophenyl)-1-(3-chloro-4-methylphenyl)-N-(3-fluorophenyl)-1,2,4-triazole-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H15BrClFN4O
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