You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name (3R,4aR,8aS)-6-(cyclopropylmethyl)-N-[(5-methylpyrazin-2-yl)methyl]-2,3,4,4a,5,7,8,8a-octahydropyrano[3,2-c]pyridine-3-carboxamide;2,2,2-trifluoroacetic acid into its molecular formula.
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C21H29F3N4O4
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