You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (1R,3S)-N-(2-cyanoethyl)-N,2,2-trimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxamide is given. What is its corresponding molecular formula?
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C14H22N2O
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