You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[4-(trifluoromethyl)hexa-2,4-dien-3-yl]-1H-benzimidazole-4-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C15H13F3N2O2
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