You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1R,2S)-2-[3-[[4-[(Z,3Z)-3-ethylidenehex-4-enoxy]-2,6-dimethylbenzoyl]amino]-4-(trifluoromethyl)phenyl]cyclopropane-1-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
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C28H30F3NO4
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