You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[4-[2-(2,3-difluoro-4-methylphenyl)ethynyl]-3-fluorophenyl]-6-ethoxy-1,2,3,4,4a,5,6,7,8,8a-decahydronaphthalene into its molecular formula.
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C27H29F3O
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