You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-[6-(2,2-difluoroethenyl)-1,2,3,4,4a,5,6,7,8,8a-decahydronaphthalen-2-yl]cyclohexan-1-amine by IUPAC nomenclature, provide its molecular formula.
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C18H29F2N
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